Important Questions of Fuses:
1. What is a fuse ? Discuss the advantages and disadvantages of a fuse.
2. Why do we prefer silver as a fuse element ?
3. Define and explain the following terms
(i) fusing current (ii) cut off current (iii) operating time (iv) breaking capacity
4. Write short notes on the following :
(i) Semi-enclosed rewireable fuse
(ii) H.R.C. cartridge fuse
(iii) Difference between a fuse and circuit breaker
5. Why are circuit breakers preferred to fuses ?
6. Why fuses cannot provide adequate discrimination on heavy short-circuit ?
7. Why fuses can interrupt heavy short-circuit currents successfully ?