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: D.C. shunt relays are made of
A)few turns
Q16: The relay operating speed depends upon
A)the spring
Q17: In order that current should flow without
Q18: Circuit breakers usually operate under
A)transient state of
Q19: Circuit breakers are essentially
A)current carrying contacts called
Q20: The current zero interruption, in oil and
Q21: Air blast circuit breaker is used for
A)over
Q23: Burden of a protective relay is the
Q24: Directional relays are based on flow of
A)power
B)current
C)voltage
Q25: A differential relay measures the vector difference
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