What is the purpose of back up protection?
A) To increase the speed
B) To increase the reach
C) To leave no blind spot
D) To guard against failure of primary
Correct Answer:
Verified
Q15: A reactance relay is
A)Voltage restrained directional relay.
B)Directional
Q16: For measuring positive, negative and zero sequence
Q17: Positive, negative and zero sequence impedances of
Q18: Phase comparators in case of static relays
Q19: For reducing tower footing resistance it is
Q20: Rate of rise of restriking voltage depends
A)Type
Q22: What is the actuating quantity for the
Q23: Protective relays can be designed to respond
Q24: On what factor does the operating speed
Q25: What does the third part consist of?
A)Primary
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