Class 2 (2nd Engineer) MET 📅 Dec 2019

Exam Question

(a) Compare the effectiveness of a current limiting circuit breaker with that of a HRC fuse. (6)

(b) A coil having a resistance of 10 ohm and an inductance of 0.15 H is connected in series with a capacitor across a 100 V, 50 Hz supply. If the current and the voltage are in phase what will be the value of the current in the circuit and the voltage drop across the coil? (10)

Reference Answer

(a) Comparision of a current limiting circuit breaker with that of a HRC fuse:
Circuit breaker
HRC fuse
Depends on electromagnetism and switching principle.

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