Switch Gear An efficient and a well designed protective relaying should have economy and simplicity good selectivity and reliability All of these high speed and selectivity economy and simplicity good selectivity and reliability All of these high speed and selectivity 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 4 8 2 6 4 8 2 6 ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arcing contacts in a circuit breaker are made of porcelain copper tungsten alloy electrolytic copper aluminium alloy porcelain copper tungsten alloy electrolytic copper aluminium alloy ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Most of the relays on service on electric power system are electronic relays electro-mechanical relays thermal relays None of these electronic relays electro-mechanical relays thermal relays None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Interruption of large currents by relay requires arc suppressing blow out coils all of these high speed opening of contacts wide separation of the opened contacts arc suppressing blow out coils all of these high speed opening of contacts wide separation of the opened contacts ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Distance relays are generally split-phase relays impedance relays none of these reactance relays split-phase relays impedance relays none of these reactance relays ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS