Switch Gear When a fault occur in a power system, the circuit breaker is opened manually is opened by remote control opens automatically None of these is opened manually is opened by remote control opens automatically None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fault that imposes severest duty on the circuit breaker is line to ground fault all three lines short-circuited two lines to ground fault line to line fault line to ground fault all three lines short-circuited two lines to ground fault line to line fault ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The making capacity of a circuit breaker is equal to 2.55 × symmetrical breaking capacity None of these √3 × symmetrical breaking capacity √2 × symmetrical breaking capacity 2.55 × symmetrical breaking capacity None of these √3 × symmetrical breaking capacity √2 × symmetrical breaking capacity ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The pick-up current of a relay is 7.5 A and the fault current in relay is 30 A. Its plug-setting multiplier (P.S.M.) is 8 6 2 4 8 6 2 4 ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For the same power, the least size is of air-blast circuit breaker oil circuit breaker sf6 circuit breaker vaccum circuit breaker air-blast circuit breaker oil circuit breaker sf6 circuit breaker vaccum circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The relay operating coil is supplied through None of these power transformer fuse current transformer None of these power transformer fuse current transformer ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS