Switchgear Protections - Study Mode
[#51] The relay operating speed depends upon
Correct Answer
(D) all of the above
[#52] The fuse blows off by
Correct Answer
(C) melting
[#53] If the fault occurs near the impedance relay, the VII ratio will be
Correct Answer
(B) lower than that of if fault occurs away from the relay
[#54] Oil switches are employed for
Correct Answer
(C) high voltages and large currents circuits
[#55] Which of the following circuit breakers has high reliability and minimum maintenance ?
Correct Answer
(B) Circuit breaker with SF6 gas