An efficient and a well designed protective relaying should have
A) good selectivity and reliability
B) economy and simplicity
C) high speed and selectivity
D) all of the above
Correct Answer:
Verified
Q15: In order that current should flow without
Q16: Circuit breakers usually operate under
A)transient state of
Q17: Circuit breakers are essentially
A)current carrying contacts called
Q18: The current zero interruption, in oil and
Q19: Air blast circuit breaker is used for
A)over
Q21: Burden of a protective relay is the
Q22: Directional relays are based on flow of
A)power
B)current
C)voltage
Q23: A differential relay measures the vector difference
Q24: A transmission line is protected by
A)inrush protection
B)distance
Q25: Large internal faults are protected by
A)merz price
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