Switch Gear The fault that imposes severest duty on the circuit breaker is two lines to ground fault all three lines short-circuited line to ground fault line to line fault two lines to ground fault all three lines short-circuited line to ground fault line to line fault ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Most of the relays on service on electric power system are None of these thermal relays electronic relays electro-mechanical relays None of these thermal relays electronic relays electro-mechanical relays ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Breaking capacity of a circuit breaker is usually expressed in terms of amperes volts Mw MVA amperes volts Mw MVA ANSWER DOWNLOAD EXAMIANS APP
Switch Gear In a single bus-bar system there will be complete shut down when fault occurs on the bus itself two or more faults occur simultaneously fault occurs with respect to earthing fault occurs on neutral line fault occurs on the bus itself two or more faults occur simultaneously fault occurs with respect to earthing fault occurs on neutral line 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 6 8 4 2 6 8 4 2 ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The voltage appearing across the contacts after opening of the circuit breaker is called surge voltage arc voltage recovery voltage operating voltage surge voltage arc voltage recovery voltage operating voltage ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS