Question

Current Chopping is most severe in which one of the following?

(a) Air Blast Circuit Breaker

(b) Oil Circuit Breaker

(c) Air Break Circuit Breaker

(d) Vacuum Circuit Breaker

This question was posed to me in an internship interview.

The doubt is from Electrical Drive Systems in section Electrical Drive Systems and Components of Electric Drives

Answer 1

Correct choice is (a) Air Blast Circuit Breaker

The explanation is: Current chopping is most severe in the case of Air blast circuit breaker. Resistance switching is used to avoid the problem of current chopping.