Q. 15 The interrupting time of a circuit breaker is the period between the instant of
(A) initiation of short circuit and the arc extinction on an opening operation
(B) energizing of the trip circuit and the arc extinction on an opening operation
(C) initiation of short circuit and the parting of primary arc contacts
(D) energizing of the trip circuit and the parting of primary arc contacts
Answer: (B)
Explanation:
