Question: What is the brand of this vehicle?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Dodge Caliber. The Dodge Caliber is a compact hatchback manufactured and marketed by Chrysler's Dodge division from model years 2007 to 2012, replacing the Dodge Neon and Chrysler PT Cruiser.Following the Caliber concept which debuted at the 2005 Geneva Motor Show, the pre-production version debuted at the 2006 North American International Auto Show, with market launch in March 2006.The Caliber was manufactured at the Belvidere Assembly (Illinois) plant, and across its six-year model run, just over 400,000 were produced.## Marketing.The Caliber was one of Dodge's first modern offerings in Europe and in Asian markets such as Japan, South Korea, and Singapore, as.

Dodge Caliber. it established new distribution channels there. It was also introduced in China in 2008 as Dodge's second modern vehicle offering in that market. Dodge vehicles were previously officially sold in China during the World War II era. The introduction of the Caliber marked the return of the Dodge brand to Australia since the early 1970s.The Caliber in Japan joined the Chrysler PT Cruiser in 2007, as the PT Cruiser was offered since 2000, but as with previous Chrysler products sold in Japan, the width dimension exceeded the Japanese Government dimension regulations, and Japanese consumers were liable for annual taxes for.

Dodge Caliber. driving a larger car which affected sales. As Chrysler products were considered large to the Japanese market, Chrysler offered products that offered spacious interiors with four doors and one-piece liftgates to broaden their appeal to the Japanese as a compromise for paying the annual tax for large vehicles.The marketing plan for the first year of the Caliber's production included 20% of the budget for online marketing, print ads, and TV commercials.## Features.The Dodge Caliber offered a continuously variable transmission (called "CVT2" by Dodge) sourced from Jatco (a Nissan subsidiary), the second DaimlerChrysler model to employ this technology after the Mercedes-Benz.

Dodge Caliber. A-Class. It uses a four-cylinder 1.8-2.4 L "World" gasoline engine, designed jointly by Chrysler, Mitsubishi, and Hyundai.The car features an optional electronically controlled all-wheel drive system with variable torque at speeds of 25 to 65 (mph) for optimal handling.The Caliber uses a heavily modified GS platform, co-designed with Mitsubishi Motors. The modified GS platform is now called the JS platform by Chrysler for mid-size cars and PM/MK for compact cars. It shares a portion of the platform with the Mitsubishi Lancer, but is most similar to the Jeep Compass and Jeep Patriot. The Caliber wheels have a 5-hole pattern with.

Dodge Caliber. a 114.3 mm bolt circle.## Safety.The Insurance Institute for Highway Safety (IIHS) gave the Caliber an overall "Good" score in frontal crash testing. The Dodge Caliber was standard with side curtain airbags, but torso side airbags were optional. The IIHS had scored the Caliber "Marginal" overall in their side impact test. However, that Caliber was not equipped with the optional torso side airbag.## Models.Three models were available at the Caliber's launch, with a fourth available in mid-2006.The base SE model features front-wheel drive and a 1.8 L 148 (hp) "World" I4 attached to a Magna Drivetrain T355 5-speed manual transmission.

Dodge Caliber. A 2.0 L 158 (hp) version of the engine paired with the CVT2 transmission was available as an option.The standard configuration for the SE lacks air conditioning, power windows, door locks, or mirrors. The grille surround is body-colored, while that of all other models is chromed. Canadian SXT and R/T models feature body-color grilles instead of chrome grilles. The Caliber SE doesn't have a tachometer or assist handles, 15 (in) steel wheels with wheel covers are standard. Some options were not available on the SE.For 2011, this model was named Express, reverting to SE for 2012. For 2012, the CVT.

Dodge Caliber. transmission option was dropped only for the SE, leaving the five-speed manual transmission as the only available transmission option for the SE. The CVT continued to be offered in the SXT and SXT Plus models for 2012.The SXT has the same engine choices as the SE but many more features are available as standard. Air conditioning is standard equipment at this level, including the Chill Zone beverage cooler inside the front lower glove compartment. The gauge cluster gains a tachometer and an (optional) trip computer. The driver's seat adds height adjustment, the passenger seat folds flat for load-carrying, and the.

Dodge Caliber. rear seats recline. Power windows, locks, mirrors, and remote keyless entry are included. The grille is chromed and 17 (in) steel wheels are standard, with 17 (in) aluminum wheels as an option. The cargo area light includes a removable and rechargeable flashlight while the front dome light incorporates two reading lamps. In Europe, this version was also commercialized equipped with a VW-built 2.0 L turbodiesel engine.Some Dodge publications mention a SXT Sport Wagon model, while others (e.g. the Dodge website) list a SXT "E" package with identical features. This consists of 17 (in) aluminum wheels, color-keyed cloth seat inserts, color-matched.

Dodge Caliber. instrument panel trim, along with fog lamps.The UK SXT Sport model has 18 (in) alloy wheels, color-keyed cloth seats and instrument panel, and a 9-speaker audio system as standard; early UK models did not have the chrome grille. The UK SXT Sport was available with a Volkswagen 2.0 L diesel engine mated to a six-speed manual transmission.For 2011, the Heat, Uptown, and Mainstreet were three available trim levels of the Caliber, reverting to SXT and SXT Plus in 2012.The R/T model has a 2.4 L 172 (hp) version of the World engine, equipped with the CVT2 transmission, and programmed with.

Dodge Caliber. an 'AutoStick' feature giving six simulated fixed ratios in a clutchless manual mode in addition to the standard CVT 'Drive' mode. All-wheel-drive was an option on the R/T model until 2009, but with automatic transmission only. Eighteen-inch aluminum wheels were standard, while chromed versions were optional. At launch, the CVT2 with all-wheel drive was the only powertrain combination available for the R/T. A front-wheel drive variant with the T355 5-speed manual transmission commenced production in late summer 2006. ABS was standard, and the suspension and steering systems were tuned for performance.Externally, the R/T is distinguishable by body-color/chrome door handles (replacing.

Dodge Caliber. black on other models), a chrome side molding, chromed exhaust tip, and front fog lights as standard, as well as R/T badging.Internally, the car came standard with color-keyed fabric seat inserts, while leather seats were an option as on the SXT. Color-keyed instrument panel trim was also standard, as well as a leather-wrapped steering wheel with audio controls and speed control, and a cargo area cover (all options on the SXT).The R/T model was discontinued in 2010.The SRT4 model that was introduced at the Chicago Auto Show in February 2006, was a replacement for the original Neon-based SRT-4 produced by.

Dodge Caliber. Chrysler's Street and Racing Technology group.The SRT4 hatchback competed with the Volkswagen GTI and the Mazdaspeed3. It featured a 2.4 L DOHC 16V turbocharged I4 with dual variable valve timing (DVVT). The engine produces 285 (hp) at 6,400 rpm, and 265 (lb.ft) of torque at 5,600 rpm using the TD04HL4S-20 turbo. Edmunds.com tested a Caliber SRT4 on a chassis dynamometer and obtained 281 (hp) and 261 (lb.ft) of torque at the wheels. Edmunds called the manufacturer's rating conservative; putting more power on the road than cars costing twice as much. This engine is mated to a Getrag six-speed manual transmission.

Dodge Caliber. and uses a front-wheel drive drivetrain. The Caliber SRT4 uses a MacPherson strut front suspension and a multilink rear suspension. The SRT4 came with large 13.4 (in) vented front disc brakes (from the Dodge Charger Police Pack version) with dual-piston calipers and 11.9 (in) rear single-piston disc brakes. It also featured four-wheel ABS, with electronic assistance. The wheels are 19 (in), five-spoke, SRT-stamped, painted aluminum and equipped with Goodyear RSA 225/45R19 tires. Package options included polished aluminum wheels, Goodyear Eagle F1 Supercar tires, SIRIUS satellite radio with Kicker SRT livin' loud audio, EVIC with performance pages, security alarm, and optional.

Dodge Caliber. paint colors.The SRT4 model of the Caliber was available through 2009.## Updates.## 2009.For the 2009 model, the Caliber underwent a minor revamp. The plain plastic black-colored door handles available on base models were replaced by painted car-colored handles previously available only on R/T. In addition, the trunk lid was reduced in weight and simplified in its opening. In the interior, all panels were made black instead of grey. The "DODGE" badge that was on top of the Ram logo at the middle was shifted to the left, while the "CALIBER" badge was moved to the right from the left, both.

Dodge Caliber. equal in font size. The car model title, previously indicated on the right, was moved to the bottom right corner of the gate lid.## 2010.The 2010 model year was unveiled at the 2009 Frankfurt Motor Show, featuring a refreshed interior design composed of metallic outlines and parts of glass to suppress the abundance of plastic materials on previous models, as well as the addition of an 8-way power driver's seat, heated mirrors, and an automatic climate control system previously available only on R/T. The dashboard also features the relocation of the glove box due to many customer complaints, which now.

Dodge Caliber. occupies the spot over the radio panel and comprises a "push-open" lock instead of the previous "squeeze-and-lift" opening mechanism.The 1.8 L engine was dropped from the SE and SXT models, and the SRT-4 model is discontinued. European market models receive a new 2.2 L diesel engine with 163 (hp) and 236 (lb·ft) of torque that provides a combined city and highway fuel efficiency of 40.6 (mpgus).For the United States market, the models were promptly renamed and rebranded, with SE becoming "Main Street", SXT — "Heat" and R/T — "Rush". Two more models were launched in 2010: a luxury all-included variant.

Dodge Caliber. "Uptown" and a base variant "Express" in which the black plastic handles returned. "Express" was the only model not to feature automatic climate control as an option, the "Main Street" featured speed control, an anti-lock brake system, and electronic stability control, which were previously unavailable as options for SE. All models except "Express" featured 17-inch wheels.## 2011.The 2011 model brought six new paint schemes, standard stability control except on Express models, Sirius traffic when equipped with a navigation system, 18-inch chrome-clad wheels available on Uptown models (17" painted are standard), updated steering except on Express models, and new shocks and.

Dodge Caliber. a thicker rear anti-roll bar on Rush and Heat models. The Caliber and the Nitro were the only two cars in the Dodge vehicle lineup to still feature the Ram logo on both fascia, rear, and the steering wheel. The Dodge Nitro also featured driver and passenger floor mats. The logo was removed from the mats in Calibers with the 2009 model.## 2012.For the 2012 model year, the models were renamed back to SE, SXT, and SXT Plus. The Plus version includes all the SXT items and 18-inch aluminum wheels with performance tires, as well as a 6-way power-adjustable driver.

Dodge Caliber. seat. The SXT Plus was not sold in Canada.## Discontinuation.The 2010 Caliber was the last model sold in Europe. The 2011 model ended production on 23 November 2011, in United States, with the remainder being sold as the 2012 model year Caliber in both U.S. and Canada. A successor called the Dart, based on the Alfa Romeo Giulietta's platform, went on sale in June 2012 for the 2013 model-year as the compact vehicle in Dodge's lineup. Dodge Caliber official website (archived).


Question: Who is the manufacturer of this object?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Barnes & Noble Nook. The Barnes & Noble Nook (styled nook or NOOK) is a brand of e-readers developed by American book retailer Barnes & Noble, based on the Android platform. The original device was announced in the U.S. in October 2009, and was released the next month. The original Nook had a six-inch E-paper display and a separate, smaller color touchscreen that serves as the primary input device and was capable of Wi-Fi and AT&T 3G wireless connectivity. The original Nook was followed in November 2010 by a color LCD device called the Nook Color, in June 2011 by the Nook Simple Touch,.

Barnes & Noble Nook. and in November 2011 and February 2012 by the Nook Tablet. On April 30, 2012, Barnes & Noble entered into a partnership with Microsoft that spun off the Nook and college businesses into a subsidiary. On August 28, 2012, Barnes and Noble announced partnerships with retailers in the UK, which began offering the Nook digital products in October 2012. In December 2014, B&N purchased Microsoft's Nook shares, ending the partnership.Nook users may read nearly any Nook Store e-book, digital magazines or newspapers for one hour once per day while connected to a Barnes & Noble's Wi-Fi.## Naming.The Nook name and.

Barnes & Noble Nook. identity was devised and created by the Brand Development Group at R/GA. Nook was initially rejected as a name by Barnes & Noble but eventually the connection to a nook being a familiar place to read was compelling enough to change the minds of the company's executives. This decision pivoted on the information contained within an NPR article which suggested that female readers tend to read more than men. The name is also claimed by Rex Wilder when he was consulting for Ammunition Design Group. The name was among over 400 he created, although that naming project ended with no.

Barnes & Noble Nook. name being chosen.## Devices.## Current.## Nook 10" HD (LCD).On April 2, 2021, Lenovo and Barnes and Noble released the Nook 10" HD, a successor to their 2018 model. The Android 10-based tablet has a 2.3GHz octa-core MediaTek P22T processor and 2 gigabytes of RAM. It has a 10.1 inch IPS display at a resolution of 1280 x 800. The tablet includes a microSD card slot, and comes with 32 gigabytes of onboard storage, though only 23 GB of that is usable. It has an 8MP rear camera and a 5MP front camera. It cost $129.99 at launch.## Nook GlowLight 4.

Barnes & Noble Nook. (E Ink).In December of 2021, B&N announced the 4th generation of the GlowLight e-reader. The Glowlight 4 has an enhanced lighting system that provides a cool white during the day or in rooms with bright light, but then can manually or automatically switch to night mode with an orange tone for reading in dark spaces with less blue light. The device also has physical page turn buttons and is the first device to have USB-C.## Discontinued.## E Ink Devices.## Nook 1st Edition.The device has two versions, a Nook that includes Wi-Fi and AT&T 3G wireless connectivity, and one that only.

Barnes & Noble Nook. includes Wi-Fi. This version made its debut on November 22, 2009, at a retail price of US$259. It was offered with built-in Wi-Fi + 3G connectivity for free access to the Barnes & Noble online store. This has a six-inch E Ink display, and a separate, smaller color touchscreen that serves as the primary input device. The price was dropped to US$199 on June 21, 2010, upon the release of the new Nook Wi-Fi. With the announcement of the newer Nook Simple Touch Reader, on May 25, 2011 the price was dropped to US$169. In early 2011, Nook Wi-Fi +.

Barnes & Noble Nook. 3G was discontinued. This version of the Nook 1st Edition supports only Wi-Fi (not 3G Wireless), and is easily distinguishable due to its white back panel (in contrast to the gray back panel of the Wi-Fi + 3G version). Nook Wi-Fi made its debut on June 21, 2010, at a retail price of US$149. With the announcement of the newer Nook Simple Touch Reader, on May 25, 2011 the price was dropped to US$119. In September 2011, the price was dropped again, to US$89. In late 2011, Nook Wi-Fi was discontinued.## Nook Simple Touch.Announced on May 25, 2011, the Simple.

Barnes & Noble Nook. Touch Reader (also informally referred as Nook 2nd Edition) was released on June 10, 2011 at a retail price of US$139. The Simple Touch is a Wi-Fi only Nook, with an infrared touch-screen, E Ink technology, and battery life of up to two months (or 150 hours, offering approximately 25,000 continuous page turns with Wi-Fi turned off). The device weighs 212 (g) with dimensions of 6.5" × 5" × 0.47". On November 7, 2011, the Simple Touch Reader's price dropped to US$99. On December 9, 2012, the Simple Touch Reader's price dropped to US$79. On December 4, 2013, the Simple.

Barnes & Noble Nook. Touch Reader's price dropped to US$59. In February 2014, the Simple Touch Reader was discontinued due to being phased out by the GlowLight.## Nook Simple Touch with GlowLight.On April 12, 2012, a Nook Simple Touch Reader with built-in LED lighting, called "GlowLight", was released with a retail price of US$139.This model is distinguishable from the non glow light model by a gray bezel on the outer edge. On September 30, 2012, the Simple Touch Reader with Glowlight's price dropped to US$119. On August 18, 2013, the Simple Touch Reader with Glowlight's price dropped to US$99. On October 30, 2013, the.

Barnes & Noble Nook. Simple Touch Reader with Glowlight was discontinued due to being phased out by the Nook Glowlight.## Nook GlowLight.The Nook Glowlight (marketed as the "nook GlowLight") e-reader was released on October 30, 2013. The Glowlight uses a 6-inch touchscreen with E Ink Pearl, Wi-Fi and has a battery life of two months with wireless off; it launched at a US$119 retail price. It weighs 175 (g) with dimensions of 6.5" × 5" × 0.42" and has 4 GB of storage, of which 2 GB is reserved for Nook Store content and 512 MB for additional user content. The device uses Android.

Barnes & Noble Nook. 2.3 Gingerbread and it has an 800 MHz processor with 256 MB of RAM. Compared to the Nook Simple Touch Reader, the GlowLight has a white exterior, a brighter screen, a boost in screen resolution to 1024 × 758 and a more durable silicone edge. Compared to the Simple Touch, the microSD card slot and page-turn buttons have been removed. On November 21, 2014, the Glowlight's price dropped to US$99.## Nook GlowLight Plus.The Nook GlowLight Plus e-reader was released on October 21, 2015 and it features a 6-inch 300ppi Carta E Ink screen with frontlight and touchscreen, Wi-Fi, an aluminum.

Barnes & Noble Nook. rear shell, six weeks of battery (1,500 mAh) life with wireless off,6.4 by 4.6 by 0.4 inches and weighs 6.9 ounces, and meets IP67, meaning it is waterproof for up to 30 minutes at a maximum depth of 1 meter and is dustproof. The Nook software is run on Android 4.4 KitKat and it has 2.8GB of user-accessible storage. The GlowLight Plus uses a Freescale i.MX6 1 GHz CPU and has 512MB RAM.Since the device runs Android 4.4, third party apps and launchers can be installed. Due to the lack of physical buttons, initial set up to install third party.

Barnes & Noble Nook. apps is done through a USB connection to a computer.## Nook GlowLight Plus.In May 2019, B&N announced the GlowLight Plus e-reader. The device is the largest Nook e-reader to date with a 7.8-inch E Ink screen. The Glowlight Plus is waterproof, has 8GB of storage, a color-shifting frontlight similar to the GlowLight 3, and it has physical page turn buttons. The lighting technology has adjustable settings for a cool white color during the day and a warmer tone at night.## Nook GlowLight 3.In November 2017, B&N announced the 3rd generation of the GlowLight e-reader. The device returned to a design.

Barnes & Noble Nook. more reminiscent of the original Simple Touch with its 6-inch screen and dropped the IP67 certification. The Glowlight 3 has an enhanced lighting system that provides a cool white during the day or in rooms with bright light, but then can manually or automatically switch to night mode with an orange tone for reading in dark spaces with less blue light.## LCD Devices.## Nook Color.Released on November 19, 2010 and priced at US$249, the Nook Color comes installed with Android 2.1 Eclair. The device is powered by a TI OMAP 3621 800 MHz processor, and has 512 MB of RAM,.

Barnes & Noble Nook. 8 GB of flash storage, a 7" LCD screen, and a microSD expansion slot. On February 21, 2012, the price of the Nook Color was reduced to US$169. On August 12, 2012, the price of the Nook Color was reduced to US$149. On November 3, 2012, following the release of the Nook HD and Nook HD+, the price of the Nook Color was reduced to US$139.## Nook Tablet.The 7-inch Nook Tablet, based on Android OS, with 16 GB of internal storage became available on November 17, 2011 for US$249. A version with 8 GB of internal storage was made available.

Barnes & Noble Nook. February 21, 2012 for US$199, replacing the Nook Color in that price range. On August 12, 2012, the price of the Nook Tablet 8 GB and Nook Tablet 16 GB were reduced to US$179 and US$199 respectively.## Nook HD.Nook HD (styled NOOK HD), announced September 26, 2012 and released November 1, 2012 along with the Nook HD+, is a 7-inch tablet with a resolution of 1440x900. It competes with the 7-inch Kindle Fire HD and comes in two colors: snow and smoke (a dark gray). It has a Texas Instruments 1.3 GHz dual-core processor with 1 GB RAM. It can.

Barnes & Noble Nook. play back video at 720p from the NOOK Video store, much like Amazon.com's Instant Video service. The Nook HD was initially priced at US$199 for 8 GB and US$229 for 16 GB. It then sold at reduced prices at US$129 for 8 GB and US$149 for 16 GB.The Nook HD runs a heavily modified version of Android 4.0.3 Ice Cream Sandwich.The Nook HD/HD+ line was originally planned to be discontinued, as announced in Barnes and Noble's 2013 Fiscal Year-End Report, due to financial losses. A few months later, B&N President Michael P. Huseby announced that the company "intends to continue.

Barnes & Noble Nook. to design and develop cutting-edge Nook black and white and color devices at the best values in the marketplace", following the resignation of former CEO William Lynch.## Nook HD+.Nook HD+ (styled NOOK HD+) is Barnes & Noble's first tablet capable of playing back movies and television shows downloadable from NOOK Video store at 1080p resolution. Announced on September 26, 2012, the NOOK HD+ is a 9-inch tablet with a 1920 × 1280 resolution. It competes with the similar 8.9-inch Kindle Fire HD and has a Texas Instruments 1.5 GHz dual-core OMAP 4470 processor and was initially priced at US$269 and.

Barnes & Noble Nook. US$299 for 16 and 32 GB, respectively. Nook HD+ runs a heavily modified version of Android 4.0.3 Ice Cream Sandwich.## Samsung Galaxy Tab 4 Nook.On October 22, 2014, B&N released the Galaxy Tab 4 Nook 10.1 that has a 10.1" LCD. It features the same specifications as the Galaxy Tab 4 10.1, so it has a 1.2 GHz Qualcomm processor, 1280x800 resolution with 149 ppi, a 1.3 MP front camera without flash, a 3.0 MP rear-facing camera, and a microSD storage slot that accepts cards up to 64GB. It launched with a US$299 retail price.## Samsung Galaxy Tab Nook.In February.

Barnes & Noble Nook. 2014, B&N announced a new Nook color tablet would be released in 2014. In June 2014, Barnes & Noble announced it would be teaming up with Samsung to develop co-branded tablets titled the Samsung Galaxy Tab 4 Nook. The devices would feature Samsung's hardware with a 7-inch display, and customized Nook software from Barnes & Noble.## Samsung Galaxy Tab 4 Nook.The Galaxy Tab 4 Nook was released in the U.S. on August 21, 2014, with B&N's Nook Division focusing on the software and content, and Samsung focusing on the hardware with a 7" LCD. The product uses Android 4.4.2 KitKat.

Barnes & Noble Nook. on a 1.2 GHz quad-core Snapdragon SOC with 1.5 GB RAM, WiFi, and Bluetooth, and features a 1.2 MP front-facing camera, a 3.2 MP rear camera, screen resolution of 1280 × 800, and a microSD storage slot that accepts cards up to 64GB. It launched with a US$199 retail price.## Samsung Galaxy Tab S2 Nook.In September 2015, B&N released the Samsung Galaxy Tab S2 Nook, which is a Nook branded Samsung Galaxy Tab S2 8" LCD tablet that includes some Samsung and B&N software. It uses Android 5.0.2 Lollipop, and features an 8-core CPU (1.9 GHz Quad + 1.3 GHz.

Barnes & Noble Nook. Quad) with 3GB RAM, 32GB of internal storage, a microSD card slot, two cameras (2.1MP front and 8MP rear), and a 4,000 mAh battery, which B&N says will last for up to 14 hours of video usage and launched with a US$399.99 retail price.## Samsung Galaxy Tab E Nook.In October 2015, B&N released the Samsung Galaxy Tab E Nook, which is a Nook branded Samsung Galaxy Tab S2 9.7 9.7" LCD tablet that includes some Samsung, B&N and Microsoft software. This tablet runs Android 5.1.1 Lollipop on a 1.2 GHz Qualcomm Snapdragon 410 CPU with 16GB of storage, microSD card.

Barnes & Noble Nook. support, weighs 547 grams, and two cameras (2MP front and 5MP rear); and its 9.6" display has a resolution of 1280 x 800 and it retails for $249.## Nook Tablet 7.In November 2016, B&N released the Nook Tablet 7, which is a Nook-branded tablet with a 7" LCD screen that has a resolution of 600 x 1024, and retails at $50. It is using Android 6.0 Marshmallow with Nook apps included with a 1.3 GHz MediaTek CPU. It has 8GB storage, a microSD card slot, Wi-Fi and Bluetooth. It weighs 8.8 ounces and has a battery for up to 7.

Barnes & Noble Nook. hours. In December 2018 B&N released updated version with 16GB storage and Android 8.1 (Go edition).## Nook Tablet 10.1".On November 14, 2018, B&N released the Nook Tablet 10.1", an Android 8.1 (Go edition) tablet with a 10.1" LCD screen at a resolution of 1920 x 1200 and a 224 ppi pixel density. It has a 1.5 GHz MediaTek processor and 2GB of RAM. The device has 32GB of onboard storage (25 usable), which can be expanded with a microSD card (up to 256 GB). It has a 3.5mm headphone jack, a microUSB 2.0 port, ac Wi-Fi, and Bluetooth. The front.

Barnes & Noble Nook. and rear cameras are both 2 megapixels and can record 720p video. The tablet was manufactured by white-label manufacturer Southern Telecom, and sold at a launch price of $129.99.## Features and specifications.All models have the following features: Wi-Fi## Sales.On December 1, 2011, Barnes & Noble stated that Nook and Nook-related sales for Q2 of 2011 were US$920 million. The Nook had 13.4% global market share for E-paper readers in 2011.On October 29, 2012, the rival Blackwells and Foyles bookshops, the John Lewis department stores, the Waitrose and Sainsbury's supermarket chains and high street catalogue retailer Argos launched the Nook e-reader.

Barnes & Noble Nook. in the UK—and, from November, the Nook HD and Nook HD+ tablet computers went on sale in the stores.In March 2016, Barnes & Noble stated they would no longer sell digital content in the United Kingdom. It announced that from March 15, 2016, the UK Nook Store and the UK Nook Reading App for Android will cease operation. Whilst Barnes & Noble did not give a reason for ceasing Nook sales in the UK, commentators attributed the decision to declining sales. On March 15, 2016, Barnes & Noble announced it would close the Nook App Store and Nook Video, probably.

Barnes & Noble Nook. because Google's Play Store, which runs on Barnes & Noble devices, has been far more successful. In the UK, those who have bought, respectively, e-book or video content will need to open accounts with other providers in order to not lose the content.B&N continues to sell e-books as well as digital magazines and newspapers in the US.## Nook e-reader applications for third party devices.Barnes & Noble provides free e-reader applications to permit reading on devices other than Nooks. Selections include Nook Reading Apps, Nook for Web and Nook Study.## Nook free reading applications.Barnes & Noble offers free applications for various.

Barnes & Noble Nook. platforms, with which to access Nook digital reading material: For desktop and laptop computers: NOOK for Windows 8 and Windows 10 (US only) For smartphones and tablets: NOOK for Android NOOK for iPhone and iPad## NookStudy and Yuzu.## NookStudy.In August 2010, concurrently with introducing a web-based textbook rental service, Barnes and Noble - "one of the largest textbook retailers in the US" - introduced the NOOK Study app "for the PC or Mac that lets users buy or rent e-book versions of their textbooks for use on the computer. Mobileread describes Nook Study (sometimes styled "NookStudy" or "NOOK Study") as.

Barnes & Noble Nook. "a free e-textbook application from Barnes and Noble that provides a suite of digital study tools. It is available for Microsoft Windows and Apple's Mac OS X." Nook Study cannot be used on Nook e-readers; rather it is designed for use only on PCs, Macs, and iPads, and it permits one to read e-textbooks "on up to two (2) computers".Nook Study offers two categories of benefits: the ability to read ebooks and other content that is accessible via other eReading devices, and the ability to read e-textbooks purchased from Barnes & Noble, which are meant to be read on one's.

Barnes & Noble Nook. computer via the Nook Study application. According to Barnes & Noble's NookStudy FAQs: "You cannot use your Nook or mobile device to read textbooks as the screens are too small to properly view the contents."In "The Digital Reader", Nate Hoffelder describes capabilities possessed by Nook Study that render it superior to other e-reading software for reading textbooks. For example, he writes:In an August 2, 2011, press release, BN College cited kudos publicized on NBC's "Today Show" and MSNBC.com that deemed NOOK Study "the "Coolest Digital Study Tool Around". On the "Today Show" and in an MSNBC.com post, Wilson Rothman, Deputy.

Barnes & Noble Nook. Technology & Science Editor at MSNBC, had included NOOK Study in a list of 10 back-to-school tech survival tips to consider when shopping for college technology necessities, recommending: "NOOK Study is an essential back-to-school tool that students should consider when heading back to college – and may be the 'coolest digital study tool around.'""Barnes & Noble may well have the coolest digital study tool around. Seriously, this free eTextbook application for PC and Mac lets you not only get books digitally, but organize coursework, compile syllabi and other documents, take notes, print, export and go online for related research. While.

Barnes & Noble Nook. the same warning about Amazon's textbook rental program applies here — that your particular study materials might not be available — it's certainly worth the $0.00 price to check it out, and the other features may end up being useful on their own."## Yuzu.In April 2014, the Barnes & Noble website announced the Nook Study had been replaced by Yuzu, which the company called "the next-generation digital education platform from Barnes & Noble." In April, NOOK Study had already been "retired", and a Beta version of Yuzu was introduced for the iPad and for Internet Explorer and Safari 6.1/7 browsers.

Barnes & Noble Nook. Yuzu was formally rolled out that summer and made available to more browsers, and as an Android, iOS, and Windows app. However, the Nook Study site continued offering a link to the Nook Study program, explaining: "We understand that as a NOOK Study user, you may have some questions. On this page we will try to direct you to the appropriate websites to find what you are looking for." Clicking "Get NookStudy Help" redirects one to the "NOOK Study Knowledge Base", where they can download the Nook Study app as well as find answers to frequently asked questions. Yuzu, like.

Barnes & Noble Nook. NOOKStudy, "offers students a next-generation reading and note-taking experience in a simple app, but it also improves on NookStudy by making it easier for educators to provide course materials" by integrating with BN's college-focused website Faculty Enlight, where educators can search for the textbooks and other academic material they need, assemble them into course packs, and then build a required and recommended reading list for a class. Downsides of Yuzu, however, are: "Yuzu does not share the same accounts as the Nook Store or NookStudy" and "Yuzu is not compatible with NookStudy textbooks". Emily Price at Engadget made a similar.

Barnes & Noble Nook. observation: "With Yuzu, [NOOKStudy]'s being phased out, and sadly any pricey books you've already bought through that service are incompatible with the new app."In March 2016, B&N announced that Yuzu would be shut down and instead B&N would partner with VitalSource for digital textbooks.## Issues.## Compatibility issues.Nook for Mac users have noted the app has compatibility issues with Mac OS 10.8 Mountain Lion. While the application requires OS 10.6 Snow Leopard, many users have documented the performance issues under Mountain Lion (and consequently all Macs sold since July 2012).## Locked file table.The file table on the Nook is locked, meaning.

Barnes & Noble Nook. that external programs, such as Calibre, cannot be used to automatically organize uploaded files. All organization must be undertaken on the device itself, one book at a time, and such organization cannot be backed up or saved elsewhere.## Lending restrictions.A book can only be lent once through the Nook's LendMe program. Purchasing Barnes & Noble digital content and letting the credit card expire prevents re-downloading of the content until a valid credit card is entered into the account. This is required because most downloads from Barnes & Noble have copy restrictions (DRM), and credit cards are required to unlock them.

Barnes & Noble Nook. On September 17, 2014, Barnes & Noble removed the "download" button from many books in the My Nook online library, without advance warning. The removal of these buttons, which permitted readers to download copies of their ebooks and transfer that content to other apps or devices, upset numerous users. User complaints and inquiries, via telephone, email, online chats, and social media forums, yielded the following, standard B&N response: ## Downloading of NOOK Store content.We're sorry, but the ability to sideload NOOK purchased content has been discontinued. We apologize for any inconvenience. — NOOK Customer Care (@NOOK_Care) September 17, 2014## Spinoff.

Barnes & Noble Nook. of business.On June 25, 2014, Barnes & Noble announced that the Nook division business would be spun off into an independent company. On December 4, 2014, Barnes & Noble announced an end to its partnership with Microsoft connected to Nook and that it intended to complete the separation of Nook by the end of the first quarter of 2015. However, in February 2015, B&N decided to keep the Nook division for the short-term future. In April 2016, B&N outsourced most Nook technical services to be managed by an Indian company Bahwan CyberTek. Comparison of e-book readers Comparison of tablet computers.

Barnes & Noble Nook. Amazon Kindle Kobo eReader Official UK website.


Question: Which city or region does this building locate in?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Hill of Crosses. is said to have received his stigmata. In May 2013, Šiauliai District Municipality adopted rules regarding the placement of crosses. People are allowed to erect wooden crosses less than 3 (m) in height with no permits.In December 2019, a tourist from China removed and tossed away a cross believed to be set up by the Hong Kong pro-democracy camp. She later condemned the protesters in a Twitter post and in an Instagram video saying, "We have done a good thing today. Our motherland is great." Lithuanian Foreign Minister Linas Linkevičius condemned the woman's action in a tweet that called it.


Question: What is the closest upper taxonomy of this bird?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Redhead (bird). The redhead (Aythya americana) is a medium-sized diving duck. The scientific name is derived from Greek "aithuia", an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin "americana", of America. The redhead is 37 (cm) long with an 84 (cm) wingspan. Redhead weight ranges from 2.0 to 2.5 lbs (907-1134 g), with males weighing an average of 2.4 lbs (1089 g) and females weighing an average of 2.1 lbs (953 g). It belongs to the genus Aythya, together with 11 other described species. The redhead and the common pochard form a sister group which together is sister to.

Redhead (bird). the canvasback.The redhead goes by many names, including the red-headed duck and the red-headed pochard. This waterfowl is easily distinguished from other ducks by the male's copper coloured head and bright blue bill during the breeding season.## Taxonomy and phylogeny.## Taxonomy.The redhead is in the family Anatidae (ducks, swans, geese) and genus "Aythya" (diving ducks). There are currently no described subspecies of the redhead.The two syntype specimens of "Fuligula americana" Eyton (Monogr. Anat., 1838, p.155) are held in the vertebrate zoology collections of National Museums Liverpool at World Museum, with accession numbers NML-VZ D829 (male immature) and NML-VZ D829a (female.

Redhead (bird). as food of "Aythya americana" include: "Acteocina canaliculata", "Acteon punctostriatus", "Anachis avara", "Anachis obesa", "Caecum nitidum", "Calliostoma" sp., "Cerithidea pliculosa", "Cerithium lutosum", "Crepidula convexa", "Diastoma varium", "Melanella" sp., "Mitrella lunata", "Nassarius acutus", "Nassarius vibex", "Natica" sp., "Neritina virginea", "Odostomia trifida", "Olivella minuta", "Olivella watermani", "Polinices" sp., Pyramidellidae, "Pyrgocythara plicosa", "Rissoina catesbyana", "Sayella livida", "Turbonilla" sp., "Turbonilla interrupta" and "Vitrinella" sp.Redhead Species Account - Cornell Lab of OrnithologyRedhead - "Aythya americana" - USGS Patuxent Bird Identification InfoCenterSound, Sound metadata Macaulay Library, Cornell Lab of Ornithology.


Question: What is the closest upper taxonomy of this plant?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Dacrycarpus dacrydioides. Dacrycarpus dacrydioides, commonly known as kahikatea (from Māori) and white pine, is a coniferous tree endemic to New Zealand. A podocarp, it is New Zealand's tallest tree, gaining heights of 60 m and a life span of 600 years. It was first described botanically by the French botanist Achille Richard in 1832 as "Podocarpus" "dacrydioides", and was given its current binomial name "Dacrycarpus dacrydioides" in 1969 by the American botanist David de Laubenfels. Analysis of DNA has confirmed its evolutionary relationship with other species in the genera "Dacrycarpus" and "Dacrydium".In traditional Māori culture, it is an important source of timber.

Dacrycarpus dacrydioides. for the building of waka and making of tools, of food in the form of its berries, and of dye. When Europeans discovered it in the 18th century they found large remnant stands in both the North and South Islands, despite burning of forest by early Māori. Its use for timber and its damp fertile habitat, ideal for dairy farming, have led to its decimation almost everywhere except South Westland.Kahikatea seeds have fleshy structures called receptacles attached to them, which encourage birds such as kererū and tūī to eat them and disperse the seeds. The water storage ability of this.

Dacrycarpus dacrydioides. structures may also be to protect seeds from drying out. It supports many smaller plants in its own branches, which are called epiphytes; 100 different species have been recorded on one tree alone.## Description.The kahikatea is a coniferous tree reaching a height of 50–65 (m), making it the tallest New Zealand tree, with a trunk 1–2 (m) through. It has a 600 year life span and gains maturity after between 250 and 450 years. Near the base of the tree, the roots are typically buttressed and grooved. The wood itself is odourless and white. The majority of the trunk is.

Dacrycarpus dacrydioides. branchless—in adults around three quarters—and has grey or dark grey coloured bark which falls off thickly in flakes. Young adults have no branches in a third to a half of the trunk and have a conic shape.In juveniles the leaves are 3–7 (reaching 4 mm in young adults) by 0.5–1 mm and a dark green to red colour that come to a marked point. They are narrow, arranged in almost opposite pairs spreading away from a wider base, and curved like a scythe. In adulthood the leaves change dramatically and are a brown-green colour and just 1–2 mm long, waxy,.

Dacrycarpus dacrydioides. and grow overlapping one another tightly.As a conifer, the kahikatea has no flowers and instead has cones. Male cones, which occur on different trees to female ones, are 1 cm long and rectangular. The pollen is a pale yellow colour and has a three-pored or trisaccate shape that is distinctive in the New Zealand flora and so can be identified easily. The fruit is highly modified with a yellow-orange fleshy receptacle that is 2.5–6.5 mm long. The purple-black seed is roughly spherical and 4–6 mm in diameter. Both the seed and the ovary are covered with a thin layer of.

Dacrycarpus dacrydioides. wax. The kahikatea has a diploid chromosome count of 20.## Phytochemistry.Several different glycosides have been isolated from the leaves; the tricetin 3’,5’-di-O-/β-glucopyranoside and 3’-0-β-xylopyranoside have been found only in the kahikatea. The receptacles and seeds have been found to contain anthocyanins, rare in gymnosperms, which it was suggested in one 1988 paper make the fruit as a whole more attractive to prospective animal dispersers.## Taxonomy.The kahikatea was first described in 1832 by the French botanist Achille Richard in his "Essai d'une Flore de la Nouvelle Zélande" (Essay On The Flora of New Zealand) as "Podocarpus" "dacrydioides". There is an earlier.

Dacrycarpus dacrydioides. record given in the 1825 issue of "Mémoires du Muséum d'histoire naturelle" as "Podocarpus thujoides", but it lacks a description. It was superfluously named "Dacrydium excelsum" by Allan Cunningham in the 1838 issue of Annals of Natural History, and transferred to the genus "Nageia" by Otto Kuntze in 1891. It was given its current binomial name, "Dacrycarpus dacrydioides," in 1969 by American botanist David de Laubenfels.## Etymology."Dacrycarpus" means tear shaped fruit, and the specific epithet "dacrydioides" is after its similarity to species in the genus "Dacrydium". Common names include kahikatea, from the Māori language, and white pine. Other Māori names.

Dacrycarpus dacrydioides. recorded by 19th century ethnographers include: katea, kaikatea, koroī, kōaka, kahika, and the name kāī (for the young tree).## Evolution.A 2022 study in "Molecular Phylogenetics and Evolution", found a phylogeny, or evolutionary tree, in which kahikatea is found to be within a "Darcydioid" clade. This group of species that share a common ancestor also gave rise to the other "Dacrycarpus" species as well as those in the genus "Darcydium". They suggested it diverged from a common ancestor around 60 million years ago, in the early paleogene. This is represented in the cladogram below.## Distribution and habitat.The kahikatea is endemic to.

Dacrycarpus dacrydioides. the North, South, and Stewart Islands of New Zealand. It inhabits mostly lowland forests between 0 and 600m above sea level, though may in rare cases reach montane areas. It used to dominate a swamp forest type that now exists almost only on the South Westland region of the South Island. Kahikatea prefers flooded or alluvial soils with low levels of drainage, which in Westland occur from post glaciation events.## Ecology.## Dispersal.Under optimal circumstances a mature kahikatea can produce 800 (kg) of fruit, equivalent to 4.5 million seeds, in a year. The fruit contains a special fleshy structure called a.

Dacrycarpus dacrydioides. receptacle which helps attract birds such as the kererū, tūī, and bellbird, who then eat the fruit and disperse the seed elsewhere. One 2008 study in the New Zealand Journal of Ecology found a mean retention time of kahikatea seeds in kererū of 44.5 minutes. It was suggested in a 1989 study that the high water content of the receptacle may also help protect the seeds, which are vulnerable to drying out, from dry conditions. It may also serve as a storage vessel for water. The bluish seeds have very strong UV reflectance, which is visible to some species of.

Dacrycarpus dacrydioides. birds.## Epiphytes.Kahikatea can support a vast number of non-parasitic plants that live in its branches, called epiphytes. One 2002 study identified between 90 and 100 species occurring on one mature tree. This included 49 vascular plants and over 50 non-vascular plants, which the authors identified as comparable to the number found on a "Prumnopitys exigua" in Bolivian cloud forest.## Competition.Intraspecific competition between kahikatea trees was found in a 1999 study to be an important factor in their survival and overall success, affecting both growth rates and rates of mortality. Older trees have a particularly large advantage over resources compared to.

Dacrycarpus dacrydioides. newer ones, and also have higher growth rates. Following flooding or other natural events, the kahikatea has been found to require an open canopy in order to re-establish. Because of the consistency of these events in South Westland however, many forested areas don't progress beyond regaining kahikatea and rimu, as other species, such as kāmahi, need the environment to improve before they can return.## Conservation.Prior to the arrival of humans in New Zealand around 75% of the country was covered in trees, and kahikatea dominated its own and once widespread kahikatea forest type. Even after the burning of many forests.

Dacrycarpus dacrydioides. by early Māori, there still remained large remnant forests which European settlers came upon in the 18th and 19th centuries. Prospects for use as timber were accelerated by the vast numbers of straight and tall trees, but because the wood is soft and odourless, it was made into pulp, barrels and boxes–butter boxes in particular were made mostly out of kahikatea. The kahikatea's usually flat habitat, with its damp and fertile soil, was also a prime location for dairy farming. Together this led to the felling of much of the remaining forests in the North and South Islands during the.

Dacrycarpus dacrydioides. late 19th and early 20th centuries. Today they are confined mostly to the South Westland region of the South Island, though small remnants still exist in some places.Conservation efforts have focused on protecting and fencing kahikatea forests around the country. Riccarton Bush is one notable example of forest remnant protection. The near 16 (acre) reserve was held in the Deans family for 70 years before it was gifted to Christchurch by them in 1914, and subsequently formally protected in the Riccarton Bush Bill. It is the only surviving kahikatea forest remnant in the entire Canterbury Plains, and contains trees up.

Dacrycarpus dacrydioides. to 600 years old. Reservation of stands may not totally protect kahikatea, however, because the alluvial plains that they favour are prone to upheaval and erosion and so trees may still become damaged. Forest remnants outside of South Westland face the threat of never returning to their natural states, as a result of their small size, threats from weed species, and grazing by livestock. Despite this, the kahikatea has been classified as Least concern by the International Union for Conservation of Nature and "Not Threatened" by the New Zealand Threat Classification System, which gives it an estimated population of above.

Dacrycarpus dacrydioides. 100,000.## In Māori culture.In Māori mythology the kahikatea is a child of Tāne, the god of forests and birds, and Hine-wao-riki. It served as an important source of wood for the making of tools, of dye, and of food from its berries. To collect the latter, Māori had to climb sometimes more than 100 (ft) to reach them.19th century British ethnographers Richard Taylor, Eldson Best, and William Colenso all recorded the fruit of kahikatea being eaten, and that it was given its own name: koroī. Best described berries being collected in a basket and then hoisted down using a cord.

Dacrycarpus dacrydioides. J. H. Kerry-Nicholls and William Colenso both recorded a blue or black dye being obtained from the soot of burning the kahikatea's resin or heart wood, called kāpara or māpara. This was described as then being used in tattooing. This resin was also used as chewing gum.The wood could be made into canoes, called waka, but Best recorded that because of the softness of the wood they were far inferior to those made from tōtara. The heartwood was far stronger and R. H. Matthews described it as being used in tools and weapons such as spears. Medicinal applications were described.

Dacrycarpus dacrydioides. by W. H. Goldie, who recorded the leaves being used to cure "internal complaints" as a decoction or in a steam bath. Gymnosperm Database - "Dacrycarpus dacrydioides.


Question: What is the closest parent taxonomy of this animal?

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Blackneck garter snake. Common names: blackneck garter snake, black-neck garter snakeThamnophis cyrtopsis, the blackneck garter snake, is a species of garter snake of the genus "Thamnophis". It is native to the southwestern United States, Mexico and Guatemala, and can be found in a wide range of different habitats, often near water sources.## Description.There are three recognized subspecies of the blackneck garter snake, two of which, "Thamnophis cyrtopsis cyrtopsis" and "Thamnophis cyrtopsis ocellatus", are described below.## Western blackneck garter snake."Thamnophis cyrtopsis cyrtopsis" The western blackneck garter snake may attain 107 cm (42 inches) in total length. The snake is colored dark olive with an.

Blackneck garter snake. orange-yellow stripe that is displayed on the middle of the body from the top while the underside is usually a cream or light shade of gray. The western blackneck is a water snake that lives near rivers, swims, and eats small fish and tadpoles.## Eastern blackneck garter snake."Thamnophis cyrtopsis ocellatus" The eastern blackneck garter snake is smaller than the western blackneck garter snake, with an average total length of less than 51 cm (20 inches). It is frequently found on dry land near a water source rather than in water. It displays three light stripes on a dark-colored body with.


Question: What is the closest parent taxonomy of this bird?

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Black-cheeked woodpecker. The black-cheeked woodpecker ("Melanerpes pucherani") is a resident breeding bird from southeastern Mexico south to western Ecuador.This woodpecker occurs in the higher levels of wet forests, semi-open woodland and old second growth. It nests in an unlined hole 6 - 30 (m) high in a dead tree. The clutch is two to four glossy white eggs, incubated by both sexes.The binomial commemorates the French zoologist Jacques Pucheran. The black-cheeked woodpecker feeds on insects, but will take substantial quantities of fruit and nectar.This common and conspicuous species gives a rattling "krrrrrl" call and both sexes drum on territory.## Description.The adult is.


Question: Which historic county does this place belong to?

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Blenheim Palace. Blenheim Palace (pronounced ) is a country house in Woodstock, Oxfordshire, England. It is the seat of the Dukes of Marlborough and the only non-royal, non-episcopal country house in England to hold the title of palace. The palace, one of England's largest houses, was built between 1705 and 1722, and designated a UNESCO World Heritage Site in 1987.The palace is named after the 1704 Battle of Blenheim, and thus ultimately after Blindheim (also known as Blenheim) in Bavaria. It was originally intended to be a reward to John Churchill, 1st Duke of Marlborough for his military triumphs against the French.

Blenheim Palace. a robbery: unknown thieves entered the palace at night time, just after the opening of the show, and stole a golden toilet, valued at $5 million, which had been installed by the artist in one of the bathrooms.The public have free access to about five miles (8 km) of public rights of way through the Great Park area of the grounds, which are accessible from Old Woodstock and from the Oxfordshire Way, and which are close to the Column of Victory. Blenheim Palace in film and media List of Baroque residences "Noble Households" – book with Blenheim Palace inventory of.


Question: What is the immediately prior item that this building follows in a series?

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Palais de Chaillot. The Palais de Chaillot () is a building at the top of the in the Trocadéro area in the 16th "arrondissement" of Paris, France.For the Exposition Internationale of 1937, the old 1878 Palais du Trocadéro was partly demolished and partly rebuilt to create the Palais de Chaillot. It was designed in classicising "moderne" style by architects Louis-Hippolyte Boileau, Jacques Carlu and Léon Azéma. The Palais consists of two separate wings shaped to form a wide arc, which are those of the former building with new taller portions built in front. The pair of larger central pavilions are also those of.


Question: What country does this lake belong to?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Seehamer See. Seehamer See is a lake in the Alpine foothills, Bavaria, Germany. At an elevation of 653 m, its surface area is 1.47 km².List of lakes in Bavaria.


Question: What equipment or engine is used by this item to provide power?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Electric motor. An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy.Electric motors can be powered by direct current (DC) sources, such as from batteries, or rectifiers, or by alternating current (AC) sources, such as a power grid, inverters or electrical generators.Electric.

Electric motor. braking with traction motors, electric motors can be used in reverse as generators to recover energy that might otherwise be lost as heat and friction.Electric motors produce linear or rotary force (torque) intended to propel some external mechanism, such as a fan or an elevator. An electric motor is generally designed for continuous rotation, or for linear movement over a significant distance compared to its size. Magnetic solenoids are also transducers that convert electrical power to mechanical motion, but can produce motion over only a limited distance.## History.## Early motors.Before modern electromagnetic motors, experimental motors that worked by electrostatic force.

Electric motor. persistent electric currents. Hans Christian Ørsted discovered in 1820 that an electric current creates a magnetic field, which can exert a force on a magnet. It only took a few weeks for André-Marie Ampère to develop the first formulation of the electromagnetic interaction and present the Ampère's force law, that described the production of mechanical force by the interaction of an electric current and a magnetic field. The first demonstration of the effect with a rotary motion was given by Michael Faraday on 3 September 1821 in the basement of the Royal Institution. A free-hanging wire was dipped into a.

Electric motor. pool of mercury, on which a permanent magnet (PM) was placed. When a current was passed through the wire, the wire rotated around the magnet, showing that the current gave rise to a close circular magnetic field around the wire. Faraday published the results of his discovery in the "Quarterly Journal of Science", and sent copies of his paper along with pocket-sized models of his device to colleagues around the world so they could also witness the phenomenon of electromagnetic rotations. This motor is often demonstrated in physics experiments, substituting brine for (toxic) mercury. Barlow's wheel was an early refinement.

Electric motor. to this Faraday demonstration, although these and similar homopolar motors remained unsuited to practical application until late in the century.In 1827, Hungarian physicist Ányos Jedlik started experimenting with electromagnetic coils. After Jedlik solved the technical problems of continuous rotation with the invention of the commutator, he called his early devices "electromagnetic self-rotors". Although they were used only for teaching, in 1828 Jedlik demonstrated the first device to contain the three main components of practical DC motors: the stator, rotor and commutator. The device employed no permanent magnets, as the magnetic fields of both the stationary and revolving components were produced.

Electric motor. then higher performance.In 1855, Jedlik built a device using similar principles to those used in his electromagnetic self-rotors that was capable of useful work. He built a model electric vehicle that same year.A major turning point came in 1864, when Antonio Pacinotti first described the ring armature (although initially conceived in a DC generator, i.e. a dynamo). This featured symmetrically-grouped coils closed upon themselves and connected to the bars of a commutator, the brushes of which delivered practically non-fluctuating current. The first commercially successful DC motors followed the developments by Zénobe Gramme who, in 1871, reinvented Pacinotti's design and adopted.

Electric motor. from such tasks as handling grain or pumping water. Household uses (like in washing machines, dishwashers, fans, air conditioners and refrigerators (replacing ice boxes)) of electric motors reduced heavy labor in the home and made higher standards of convenience, comfort and safety possible. Today, electric motors consume more than half of the electric energy produced in the US.## AC motors.In 1824, French physicist François Arago formulated the existence of rotating magnetic fields, termed Arago's rotations, which, by manually turning switches on and off, Walter Baily demonstrated in 1879 as in effect the first primitive induction motor. In the 1880s many.

Electric motor. stator, which does not. It also includes two electrical parts, a set of magnets and an armature, one of which is attached to the rotor and the other to the stator, together forming a magnetic circuit: Field magnets - The magnets create a magnetic field that passes through the armature. These can be electromagnets or permanent magnets. The field magnet is usually on the stator and the armature on the rotor, but in some types of motor these are reversed.## Bearings.The rotor is supported by bearings, which allow the rotor to turn on its axis. The bearings are in turn.

Electric motor. supported by the motor housing.## Rotor.The rotor is the moving part that delivers the mechanical power. The rotor typically holds conductors that carry currents, which the magnetic field of the stator exerts force on to turn the shaft. Alternatively, some rotors carry permanent magnets, and the stator holds the conductors. Permanent magnets offer high efficiency over a larger operating speed and power range.An air gap between the stator and rotor allows it to turn. The width of the gap has a significant effect on the motor's electrical characteristics. It is generally made as small as possible, as a large gap.

Electric motor. weakens performance. It is the main source of the low power factor at which motors operate. The magnetizing current increases and the power factor decreases with the air gap, so narrow gaps are better. Conversely, gaps that are too small may pose mechanical problems in addition to noise and losses.The motor shaft extends through the bearings to the outside of the motor, where the load is applied. Because the forces of the load are exerted beyond the outermost bearing, the load is said to be overhung.## Stator.The stator surrounds the rotor, and usually holds field magnets, which are either electromagnets.

Electric motor. consisting of wire windings around a ferromagnetic iron core or permanent magnets. These create a magnetic field that passes through the rotor armature, exerting force on the windings. The stator core is made up of many thin metal sheets that are insulated from each other, called laminations. Laminations are used to reduce energy losses that would result if a solid core were used. Resin-packed motors, used in washing machines and air conditioners, use the damping properties of resin (plastic) to reduce noise and vibration. These motors encapsulate the stator in plastic.## Armature.The armature consists of wire windings on a ferromagnetic.

Electric motor. core. Electric current passing through the wire causes the magnetic field from the field magnet to exert a force (Lorentz force) on it, turning the rotor, which delivers the mechanical output. Windings are wires that are laid in coils, usually wrapped around a laminated, soft, iron, ferromagnetic core so as to form magnetic poles when energized with current.Electric machines come in salient- and nonsalient-pole configurations. In a salient-pole motor the ferromagnetic cores on the rotor and stator have projections called poles facing each other, with a wire winding around each pole below the pole face, which become north or south.

Electric motor. poles of the magnetic field when current flows through the wire. In a nonsalient-pole (or distributed field or round-rotor) motor, the ferromagnetic core is a smooth cylinder, with the windings distributed evenly in slots about the circumference. Supplying alternating current in the windings creates poles in the core that rotate continuously. A shaded-pole motor has a winding around part of the pole that delays the phase of the magnetic field for that pole.## Commutator.A commutator is a rotary electrical switch that supplies current to the rotor. It periodically reverses the flow of current in the rotor windings as the shaft.

Electric motor. each rotor winding would reverse with each half turn, so the rotor would stop. Commutators are inefficient and commutated motors have been mostly replaced by brushless direct current motors, permanent magnet motors, and induction motors.## Motor supply and control.## Motor supply.A DC motor is usually supplied through a split ring commutator as described above. AC motors' commutation can be achieved using either a slip ring commutator or external commutation. It can be fixed-speed or variable-speed control type, and can be synchronous or asynchronous. Universal motors can run on either AC or DC.## Motor control.DC motors can be operated at variable.

Electric motor. speeds by adjusting the voltage applied to the terminals or by using pulse-width modulation (PWM).AC motors operated at a fixed speed are generally powered directly from the grid or through motor soft starters.AC motors operated at variable speeds are powered with various power inverter, variable-frequency drive or electronic commutator technologies.The term electronic commutator is usually associated with self-commutated brushless DC motor and switched reluctance motor applications.## Types.Electric motors operate on one of three physical principles: magnetism, electrostatics and piezoelectricity.In magnetic motors, magnetic fields are formed in both the rotor and the stator. The product between these two fields gives rise.

Electric motor. to a force, and thus a torque on the motor shaft. One, or both, of these fields must change with the rotation of the rotor. This is done by switching the poles on and off at the right time, or varying the strength of the pole.The main types are DC motors and AC motors, with the latter replacing the former. AC electric motors are either asynchronous or synchronous.Once started, a synchronous motor requires synchrony with the moving magnetic field's speed for all normal torque conditions.In synchronous machines, the magnetic field must be provided by means other than induction, such as.

Electric motor. from separately excited windings or permanent magnets.A fractional-horsepower motor either has a rating below about 1 horsepower (0.746 kW), or is manufactured with a standard-frame size smaller than a standard 1 HP motor. Many household and industrial motors are in the fractional-horsepower class.Notes: Rotation is independent of the frequency of the AC voltage. Rotation is equal to synchronous speed (motor-stator-field speed). In SCIM, fixed-speed operation rotation is equal to synchronous speed, less slip speed. In non-slip energy-recovery systems, WRIM is usually used for motor-starting but can be used to vary load speed. Variable-speed operation. Whereas induction- and synchronous-motor drives are.

Electric motor. typically with either six-step or sinusoidal-waveform output, BLDC-motor drives are usually with trapezoidal-current waveform; the behavior of both sinusoidal and trapezoidal PM machines is, however, identical in terms of their fundamental aspects. In variable-speed operation, WRIM is used in slip-energy recovery and double-fed induction-machine applications. A cage winding is a shorted-circuited squirrel-cage rotor, a wound winding is connected externally through slip rings. Mostly single-phase with some three-phase.Abbreviations: BLAC – Brushless AC BLDC – Brushless DC BLDM – Brushless DC motor EC – Electronic commutator PM – Permanent magnet IPMSM – Interior permanent-magnet synchronous motor PMSM – Permanent magnet synchronous motor.

Electric motor. SPMSM – Surface permanent magnet synchronous motor SCIM – Squirrel-cage induction motor SRM – Switched reluctance motor SyRM – Synchronous reluctance motor VFD – Variable-frequency drive WRIM – Wound-rotor induction motor WRSM – Wound-rotor synchronous motor LRA – Locked-rotor amps: The current you can expect under starting conditions when you apply full voltage. It occurs instantly during start-up. RLA – Rated-load amps: The maximum current a motor should draw under any operating conditions. Often mistakenly called running-load amps, which leads people to believe, incorrectly, that the motor should always pull these amps. FLA – Full-load amps: Changed in 1976 to.

Electric motor. "RLA – rated-load amps".## Self-commutated motor.## Brushed DC motor.Most DC motors are small permanent magnet (PM) types. They contain a brushed internal mechanical commutation to reverse motor windings' current in synchronism with rotation.## Electrically excited DC motor.A commutated DC motor has a set of rotating windings wound on an armature mounted on a rotating shaft. The shaft also carries the commutator. Thus, every brushed DC motor has AC flowing through its windings. Current flows through one or more pairs of brushes that touch the commutator; the brushes connect an external source of electric power to the rotating armature.The rotating armature.

Electric motor. consists of one or more wire coils wound around a laminated, magnetically "soft" ferromagnetic core. Current from the brushes flows through the commutator and one winding of the armature, making it a temporary magnet (an electromagnet). The magnetic field produced interacts with a stationary magnetic field produced by either PMs or another winding (a field coil), as part of the motor frame. The force between the two magnetic fields rotates the shaft. The commutator switches power to the coils as the rotor turns, keeping the poles from ever fully aligning with the magnetic poles of the stator field, so that.

Electric motor. – A set of windings that produces a magnetic field. Commutation: A mechanical technique in which rectification can be achieved, or from which DC can be derived.The five types of brushed DC motor are: Shunt-wound Series-wound Compound (two configurations): Cumulative compound Differentially compounded Permanent magnet (not shown) Separately excited (not shown).## Permanent magnet.A permanent magnet (PM) motor does not have a field winding on the stator frame, relying instead on PMs to provide the magnetic field. Compensating windings in series with the armature may be used on large motors to improve commutation under load. This field is fixed and cannot.

Electric motor. be adjusted for speed control. PM fields (stators) are convenient in miniature motors to eliminate the power consumption of the field winding. Most larger DC motors are of the "dynamo" type, which have stator windings. Historically, PMs could not be made to retain high flux if they were disassembled; field windings were more practical to obtain the needed flux. However, large PMs are costly, as well as dangerous and difficult to assemble; this favors wound fields for large machines.To minimize overall weight and size, miniature PM motors may use high energy magnets made with neodymium; most are neodymium-iron-boron alloy. With.

Electric motor. their higher flux density, electric machines with high-energy PMs are at least competitive with all optimally designed singly-fed synchronous and induction electric machines. Miniature motors resemble the structure in the illustration, except that they have at least three rotor poles (to ensure starting, regardless of rotor position) and their outer housing is a steel tube that magnetically links the exteriors of the curved field magnets.## Electronic commutator (EC).## Brushless DC.Some of the problems of the brushed DC motor are eliminated in the BLDC design. In this motor, the mechanical "rotating switch" or commutator is replaced by an external electronic switch.

Electric motor. synchronised to the rotor's position. BLDC motors are typically 85%+ efficient, reaching up to 96.5%, while brushed DC motors are typically 75–80% efficient.The BLDC motor's characteristic trapezoidal counter-electromotive force (CEMF) waveform is derived partly from the stator windings being evenly distributed, and partly from the placement of the rotor's permanent magnets. Also known as electronically commutated DC or inside-out DC motors, the stator windings of trapezoidal BLDC motors can be single-phase, two-phase or three-phase and use Hall effect sensors mounted on their windings for rotor position sensing and low cost closed-loop commutator control.BLDC motors are commonly used where precise speed.

Electric motor. motors are usually used in small equipment such as computers and are generally used in fans to remove heat. They make little noise, which is an advantage in equipment that is affected by vibrations.Modern BLDC motors range in power from a fraction of a watt to many kilowatts. Larger BLDC motors rated up to about 100 kW are used in electric vehicles. They also find use in electric model aircraft.## Switched reluctance motor.The switched reluctance motor (SRM) has no brushes or permanent magnets, and the rotor has no electric currents. Torque comes from a slight misalignment of poles on the.

Electric motor. rotor with poles on the stator. The rotor aligns itself with the magnetic field of the stator, while the stator field windings are sequentially energized to rotate the stator field.The magnetic flux created by the field windings follows the path of least magnetic sending the flux through rotor poles that are closest to the energized poles of the stator, thereby magnetizing those poles of the rotor and creating torque. As the rotor turns, different windings are energized, keeping the rotor turning.SRMs are used in some appliances and vehicles.## Universal AC/DC motor.A commutated, electrically excited, series or parallel wound motor is.

Electric motor. referred to as a universal motor because it can be designed to operate on either AC or DC power. A universal motor can operate well on AC because the current in both the field and the armature coils (and hence the resultant magnetic fields) synchronously reverse polarity, and hence the resulting mechanical force occurs in a constant direction of rotation.Operating at normal power line frequencies, universal motors are often used in sub-kilowatt applications. Universal motors formed the basis of the traditional railway traction motor in electric railways. In this application, using AC power on a motor designed to run on.

Electric motor. DC would experience efficiency losses due to eddy current heating of their magnetic components, particularly the motor field pole-pieces that, for DC, would have used solid (un-laminated) iron. They are now rarely used.An advantage is that AC power may be used on motors that specifically have high starting torque and compact design if high running speeds are used. By contrast, maintenance is higher and lifetimes are shortened. Such motors are used in devices that are not heavily used, and have high starting-torque demands. Multiple taps on the field coil provide (imprecise) stepped speed control. Household blenders that advertise many speeds.

Electric motor. an asynchronous AC motor where power is transferred to the rotor by electromagnetic induction, much like transformer action. An induction motor resembles a rotating transformer, because the stator (stationary part) is essentially the primary side of the transformer and the rotor (rotating part) is the secondary side. Polyphase induction motors are widely used in industry.## Cage and wound rotor.Induction motors may be divided into Squirrel Cage Induction Motors (SCIM) and Wound Rotor Induction Motors (WRIM). SCIMs have a heavy winding made up of solid bars, usually aluminum or copper, electrically connected by rings at the ends of the rotor. The.

Electric motor. bars and rings as a whole are much like an animal's rotating exercise cage.Currents induced into this winding provide the rotor magnetic field. The shape of the rotor bars determines the speed-torque characteristics. At low speeds, the current induced in the squirrel cage is nearly at line frequency and tends to stay in the outer parts of the cage. As the motor accelerates, the slip frequency becomes lower, and more current reaches the interior. By shaping the bars to change the resistance of the winding portions in the interior and outer parts of the cage, a variable resistance is effectively.

Electric motor. steering wheels.Another common application is to control the throttle of an internal combustion engine with an electronic governor. The motor works against a return spring to move the throttle in accord with the governor output. The latter monitors engine speed by counting electrical pulses from the ignition system or from a magnetic pickup and depending on the speed, makes small adjustments to the amount of current. If the engine slows down relative to the desired speed, the current increases, producing more torque, pulling against the return spring and opening the throttle. Should the engine run too fast, the governor reduces.

Electric motor. the current, allowing the return spring to pull back and reduce the throttle.## Synchronous motor.A synchronous electric motor is an AC motor. It includes a rotor spinning with coils passing magnets at the same frequency as the AC and produces a magnetic field to drive it. It has zero slip under typical operating conditions. By contrast induction motors must slip to produce torque. One type of synchronous motor is like an induction motor except that the rotor is excited by a DC field. Slip rings and brushes conduct current to the rotor. The rotor poles connect to each other and.

Electric motor. when slip rate decreases sufficiently, the rotor (a smooth cylinder) becomes temporarily magnetized. Its distributed poles make it act like a permanent magnet synchronous motor. The rotor material, like that of a common nail, stays magnetized, but can be demagnetized with little difficulty. Once running, the rotor poles stay in place; they do not drift.Low-power synchronous timing motors (such as those for traditional electric clocks) may have multi-pole permanent magnet external cup rotors, and use shading coils to provide starting torque. "Telechron" clock motors have shaded poles for starting torque, and a two-spoke ring rotor that performs like a discrete.

Electric motor. allows for a smaller electronic converter but the cost of the rotor winding and slip rings may offset the saving in the power electronics components. Difficulties affect controlling speed near synchronous speed limit applications.## Special magnetic motors.## Rotary.## Ironless or coreless rotor motor.The coreless or ironless DC motor is a specialized permanent magnet DC motor. Optimized for rapid acceleration, the rotor is constructed without an iron core. The rotor can take the form of a winding-filled cylinder, or a self-supporting structure comprising only wire and bonding material. The rotor can fit inside the stator magnets; a magnetically soft stationary cylinder.

Electric motor. inside the rotor provides a return path for the stator magnetic flux. A second arrangement has the rotor winding basket surrounding the stator magnets. In that design, the rotor fits inside a magnetically soft cylinder that can serve as the motor housing, and provides a return path for the flux.Because the rotor is much lower mass than a conventional rotor, it can accelerate much more rapidly, often achieving a mechanical time constant under one millisecond. This is especially true if the windings use aluminum rather than (heavier) copper. The rotor has no metal mass to act as a heat sink;.

Electric motor. even small motors must be cooled. Overheating can be an issue for these designs.The vibrating alert of cellular phones can be generated by cylindrical permanent-magnet motors, or disc-shaped types that have a thin multipolar disc field magnet, and an intentionally unbalanced molded-plastic rotor structure with two bonded coreless coils. Metal brushes and a flat commutator switch power to the rotor coils.Related limited-travel actuators have no core and a bonded coil placed between the poles of high-flux thin permanent magnets. These are the fast head positioners for rigid-disk ("hard disk") drives. Although the contemporary design differs considerably from that of loudspeakers,.

Electric motor. it is still loosely (and incorrectly) referred to as a "voice coil" structure, because some earlier rigid-disk-drive heads moved in straight lines, and had a drive structure much like that of a loudspeaker.## Pancake or axial rotor motor.The printed armature or pancake motor has windings shaped as a disc running between arrays of high-flux magnets. The magnets are arranged in a circle facing the rotor spaced to form an axial air gap. This design is commonly known as the pancake motor because of its flat profile.The armature (originally formed on a printed circuit board) is made from punched copper sheets.

Electric motor. with 180 (C), Class H rating.The unique advantage of ironless DC motors is the absence of cogging (torque variations caused by changing attraction between the iron and the magnets). Parasitic eddy currents cannot form in the rotor as it is totally ironless, although iron rotors are laminated. This can greatly improve efficiency, but variable-speed controllers must use a higher switching rate (>40 kHz) or DC because of decreased electromagnetic induction.These motors were invented to drive the capstan(s) of magnetic tape drives, where minimal time to reach operating speed and minimal stopping distance were critical. Pancake motors are widely used in.

Electric motor. high-performance servo-controlled systems, robotic systems, industrial automation and medical devices. Due to the variety of constructions now available, the technology is used in applications from high temperature military to low cost pump and basic servos.Another approach (Magnax) is to use a single stator sandwiched between two rotors. One such design has produced peak power of 15 kW/kg, sustained power around 7.5 kW/kg. This yokeless axial flux motor offers a shorter flux path, keeping the magnets further from the axis. The design allows zero winding overhang; 100 percent of the windings are active. This is enhanced with the use of rectangular-crosssection.

Electric motor. copper wire. The motors can be stacked to work in parallel. Instabilities are minimized by ensuring that the two rotor discs put equal and opposing forces onto the stator disc. The rotors are connected directly to one another via a shaft ring, cancelling out the magnetic forces.Magnax motors range in size from 0.15-5.4 (m) in diameter.## Servo motor.A servo motor is a motor that is used within a position-control or speed-control feedback system. Servomotors are used in applications such as machine tools, pen plotters, and other process systems. Motors intended for use in a servomechanism must have predictable characteristics for.

Electric motor. speed, torque, and power. The speed/torque curve is important and is high ratio for a servo motor. Dynamic response characteristics such as winding inductance and rotor inertia are important; these factors limit performance. Large, powerful, but slow-responding servo loops may use conventional AC or DC motors and drive systems with position or speed feedback. As dynamic response requirements increase, more specialized motor designs such as coreless motors are used. AC motors' superior power density and acceleration characteristics tends to favor permanent magnet synchronous, BLDC, induction, and SRM drive approaches.A servo system differs from some stepper motor applications in that position.

Electric motor. feedback is continuous while the motor is running. A stepper system inherently operates open-loop—relying on the motor not to "miss steps" for short term accuracy—with any feedback such as a "home" switch or position encoder external to the motor system.## Stepper motor.Stepper motors are typically used to provide precise rotations. An internal rotor containing permanent magnets or a magnetically soft rotor with salient poles is controlled by a set of electronically switched external magnets. A stepper motor may also be thought of as a cross between a DC electric motor and a rotary solenoid. As each coil is energized in.

Electric motor. turn, the rotor aligns itself with the magnetic field produced by the energized field winding. Unlike a synchronous motor, the stepper motor may not rotate continuously; instead, it moves in steps—starting and then stopping—advancing from one position to the next as field windings are energized and de-energized in sequence. Depending on the sequence, the rotor may turn forwards or backwards, and it may change direction, stop, speed up or slow down at any time.Simple stepper motor drivers entirely energize or entirely de-energize the field windings, leading the rotor to "cog" to a limited number of positions. Microstepping drivers can proportionally.

Electric motor. made them uncompetitive—thus newer hard disk drives use voice coil-based head actuator systems. (The term "voice coil" in this connection is historic; it refers to the structure in a cone-type loudspeaker.)Stepper motors are often used in computer printers, optical scanners, and digital photocopiers to move the active element, the print head carriage (inkjet printers), and the platen or feed rollers.So-called quartz analog wristwatches contain the smallest commonplace stepping motors; they have one coil, draw little power, and have a permanent magnet rotor. The same kind of motor drives battery-powered quartz clocks. Some of these watches, such as chronographs, contain more.

Electric motor. 1978 era HP 7225A pen plotter used two linear stepper motors to move the pen along the X and Y axes.## Electromagnetism.## Force and torque.An electric motor converts electrical energy to mechanical energy through the force between two opposed magnetic fields. At least one of the two magnetic fields must be created by an electromagnet through the magnetic field caused by an electrical current.The force between a current formula_1 in a conductor of length formula_2 perpendicular to a magnetic field formula_3 may be calculated using the Lorentz force law: formula_4Note: X denotes vector cross product. The most general approaches to.

Electric motor. resistance Ir2 – square of current induced in the rotor s – motor slip; i.e., difference between synchronous speed and slip speed, which provides the relative movement needed for current induction in the rotor.## Back EMF.The movement of armature windings of a direct-current or universal motor through a magnetic field, induce a voltage in them. This voltage tends to oppose the motor supply voltage and so is called "back electromotive force (EMF)". The voltage is proportional to the running speed of the motor. The back EMF of the motor, plus the voltage drop across the winding internal resistance and brushes,.

Electric motor. enacted legislation to encourage the manufacture and use of higher-efficiency motors. Electric motors have efficiencies ranging from at least 15% for shaded pole motors, up to 98% for permanent magnet motors, with efficiency also dependent on load. Peak efficiency is usually at 75% of the rated load. So (as an example) a 10 HP motor is most efficient when driving a load that requires 7.5 HP. Efficiency also depends on motor size; larger motors tend to be more efficient. Some motors can not operate continually for more than a specified period of time (e.g. for more than an hour per.

Electric motor. run)## Goodness factor.Eric Laithwaite proposed a metric to determine the 'goodness' of an electric motor: formula_21Where: formula_22 is the goodness factor (factors above 1 are likely to be efficient) formula_23 are the cross sectional areas of the magnetic and electric circuit formula_24 are the lengths of the magnetic and electric circuits formula_25 is the permeability of the core formula_20 is the angular frequency the motor is driven atFrom this, he showed that the most efficient motors are likely to have relatively large magnetic poles. However, the equation only directly relates to non PM motors.## Performance parameters.## Torque.Electromagnetic motors derive torque.

Electric motor. from the vector product of the interacting fields. Calculating torque requires knowledge of the fields in the air gap. Once these have been established, the torque is the integral of all the force vectors multiplied by the vector's radius. The current flowing in the winding produces the fields. For a motor using a magnetic material the field is not proportional to the current.A figure relating the current to the torque can inform motor selection. The maximum torque for a motor depends on the maximum current, absent thermal considerations.When optimally designed within a given core saturation constraint and for a given.

Electric motor. active current (i.e., torque current), voltage, pole-pair number, excitation frequency (i.e., synchronous speed), and air-gap flux density, all categories of electric motors/generators exhibit virtually the same maximum continuous shaft torque (i.e., operating torque) within a given air-gap area with winding slots and back-iron depth, which determines the physical size of electromagnetic core. Some applications require bursts of torque beyond the maximum, such as bursts to accelerate an electric vehicle from standstill. Always limited by magnetic core saturation or safe operating temperature rise and voltage, the capacity for torque bursts beyond the maximum differs significantly across motor/generator types.Electric machines without a.

Electric motor. transformer circuit topology, such as that of WRSMs or PMSMs, cannot provide torque bursts without saturating the magnetic core. At that point, additional current cannot increase torque. Furthermore, the permanent magnet assembly of PMSMs can be irreparably damaged.Electric machines with a transformer circuit topology, such as induction machines, induction doubly-fed electric machines, and induction or synchronous wound-rotor doubly-fed (WRDF) machines, permit torque bursts because the EMF-induced active current on either side of the transformer oppose each other and thus contribute nothing to the transformer coupled magnetic core flux density, avoiding core saturation.Electric machines that rely on induction or asynchronous principles.

Electric motor. the air-gap area and the back-iron depth, which are determined by the power rating of the armature winding set, the speed of the machine, and the achievable air-gap flux density before core saturation. Despite the high coercivity of neodymium or samarium-cobalt permanent magnets, continuous torque density is virtually the same amongst electric machines with optimally designed armature winding sets. Continuous torque density relates to method of cooling and permissible operation period before destruction by overheating of windings or permanent magnet damage.Other sources state that various e-machine topologies have differing torque density. One source shows the following:where—specific torque density is normalized.

Electric motor. to 1.0 for the surface permanent magnet (SPM)—brushless ac, 180° current conduction.Torque density is approximately four times greater for liquid cooled motors, compared to those which are air cooled.A source comparing direct current, induction motors (IM), PMSM and SRM showed:Another source notes that PMSM up to 1 MW have considerably higher torque density than induction machines.## Continuous power density.The continuous power density is determined by the product of the continuous torque density and the constant torque speed range. Electric motors can achieve densities of up to 20KW/KG, meaning 20 Kilowatts of output power per kilogram.## Acoustic noise and vibrations.Acoustic noise.

Electric motor. and vibrations are usually classified in three sources: mechanical sources (e.g. due to bearings) aerodynamic sources (e.g. due to shaft-mounted fans) magnetic sources (e.g. due to magnetic forces such as Maxwell and magnetostriction forces acting on stator and rotor structures)The latter source, which can be responsible for the "whining noise" of electric motors, is called electromagnetically induced acoustic noise.## Standards.The following are major design, manufacturing, and testing standards covering electric motors: American Petroleum Institute: API 541 Form-Wound Squirrel Cage Induction Motors – 375 kW (500 Horsepower) and Larger American Petroleum Institute: API 546 Brushless Synchronous Machines – 500 kVA and.

Electric motor. 60072 Dimensions and output series for rotating electrical machines National Electrical Manufacturers Association: MG-1 Motors and Generators Underwriters Laboratories: UL 1004 – Standard for Electric Motors Indian Standard: IS:12615-2018 – Line Operated Three Phase a.c. Motors (IE CODE) “Efficiency Classes and Performance Specification” (Third Revision)## Non-magnetic motors.An electrostatic motor is based on the attraction and repulsion of electric charge. Usually, electrostatic motors are the dual of conventional coil-based motors. They typically require a high-voltage power supply, although small motors employ lower voltages. Conventional electric motors instead employ magnetic attraction and repulsion, and require high current at low voltages. In the.

Electric motor. produces acoustic or ultrasonic vibrations to produce linear or rotary motion. In one mechanism, the elongation in a single plane is used to make a series of stretches and position holds, similar to the way a caterpillar moves.An electrically powered spacecraft propulsion system uses electric motor technology to propel spacecraft in outer space. Most systems are based on electrically accelerating propellant to high speed, while some systems are based on electrodynamic tethers principles of propulsion to the magnetosphere. Electric generator Regenerative brake Goodness factor Motor capacitor Traction motor Motor controller Houston, Edwin J.; Kennelly, Arthur, "Recent Types of Dynamo-Electric Machinery",.


Question: Who occupies this building?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

30 St Mary Axe. 30 St Mary Axe (previously known as the Swiss Re Building and informally known as the Gherkin) is a commercial skyscraper in London's primary financial district, the City of London. It was completed in December 2003 and opened in April 2004. With 41 floors, it is 180 (m) tall and stands on the sites of the former Baltic Exchange and Chamber of Shipping, which were extensively damaged in 1992 in the Baltic Exchange bombing by a device placed by the Provisional IRA in St Mary Axe, a narrow street leading north from Leadenhall Street.After plans to build the 92-storey Millennium.

30 St Mary Axe. Barclays' former city headquarters in Lombard Street, the idea was that the passer-by in neighbouring streets would be nearly oblivious to the tower's existence until directly underneath it.## Design and construction.The building was constructed by Skanska, completed in December 2003 and opened on 28 April 2004. The primary occupant of the building is Swiss Re, a global reinsurance company, which had the building commissioned as the head office for its UK operation. The tower is thus sometimes known as the Swiss Re Building, although this name has never been official and was never in popular usage anyway, unlike the Gherkin.

30 St Mary Axe. "Johnny Mackintosh and the Spirit of London".In September 2006, the building was put up for sale with a price tag of £600 million. Potential buyers included British Land, Land Securities, Prudential, ING, and the Abu Dhabi royal family. On 21 February 2007, IVG Immobilien AG and UK investment firm Evans Randall completed their joint purchase of the building for £630 million, making it Britain's most expensive office building. Swiss Re made a gain of more than £300 million from the sale. The new owners are seeking compensation from four of their former managers on the deal, in which about £620.


Question: Who are the structure engineers of this building?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

30 St Mary Axe. Tower were dropped, 30 St Mary Axe was designed by Norman Foster and the Arup Group. It was erected by Skanska; construction started in 2001.The building has become a recognisable landmark of London, and it is one of the city's most widely recognised examples of contemporary architecture. It won the 2003 Emporis Skyscraper Award.## Site and early plans.The building stands on the site of the former Baltic Exchange (24–28 St Mary Axe), which was the headquarters of a global marketplace for shipping freight contracts and soft commodities, and the Chamber of Shipping (30–32 St Mary Axe). The tower's topmost panoramic.

30 St Mary Axe. shafts pull warm air out of the building during the summer and warm the building in the winter using passive solar heating. The shafts also allow sunlight to pass through the building, making the work environment more pleasing, and keeping the lighting costs down.The primary methods for controlling wind-excited sways are to increase the stiffness, or increase damping with tuned/active mass dampers. To a design by Arup, its fully triangulated perimeter structure makes the building rigid enough without any extra reinforcements. Despite its overall curved glass shape, there is only one piece of curved glass on the building, the lens-shaped.


Question: Who is the architect of this facility?

Instruction: Retrieve a Wikipedia paragraph that provides an answer to the given query about the image.

Battersea Power Station. Battersea Power Station is a decommissioned Grade II* listed coal-fired power station, located on the south bank of the River Thames, in Nine Elms, Battersea, in the London Borough of Wandsworth. It was built by the London Power Company (LPC) to the design of Leonard Pearce, Engineer in Chief to the LPC, and CS Allott & Son Engineers. The architects were J. Theo Halliday and Giles Gilbert Scott. The station is one of the world's largest brick buildings and notable for its original, Art Deco interior fittings and decor.The building comprises two power stations, built in two stages, in a.

Battersea Power Station. The site was chosen for its proximity to the River Thames for cooling water and coal delivery, and because it was in the heart of London, the station's immediate supply area.The proposal sparked protests from those who felt that the building would be too large and would be an eyesore, as well as worries about the pollution damaging local buildings, parks and even paintings in the nearby Tate Gallery. The company addressed the former concern by hiring Sir Giles Gilbert Scott to design the building's exterior. He was a distinguished architect and industrial designer, famous for his designs for the.

Battersea Power Station. Giles Gilbert Scott was involved in the project much later on, consulted to appease public reaction, and referred to in the press as "architect of the exterior". The station was designed in the "brick-cathedral" style of power station design, which was popular at the time. Battersea is one of a very small number of examples of this style of power station design still in existence in the UK, others being Uskmouth and Bankside. The station's design proved popular straightaway, and was described as a "temple of power", which ranked equal with St Paul's Cathedral as a London landmark. In a.


Question: What is the basionym of this plant?

Instruction: I want to find a paragraph from Wikipedia that answers my question about this image.

Jujube. as (used for the fruit) and (the tree). A descendant of the Latin word into a Romance language, which may have been French or medieval Latin , in turn gave rise to the common English "jujube". This name is not related to jojoba, which is a loan from Spanish , itself borrowed from "hohohwi", the name of that plant in a Native American language.The binomial name has a curious nomenclatural history, due to a combination of botanical naming regulations, and variations in spelling. It was first named in the binomial system by Carl Linnaeus as "Rhamnus zizyphus", in "Species Plantarum.