Switch Gear The arcing contacts in a circuit breaker are made of aluminium alloy electrolytic copper porcelain copper tungsten alloy aluminium alloy electrolytic copper porcelain copper tungsten alloy ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The operating time of a circuit breaker is 0.001 sec 0.002 sec 0.2 sec 0.05 sec 0.001 sec 0.002 sec 0.2 sec 0.05 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following circuit breakers is prefered for EHT applications ? Sf6 CB bulk oil circuit breaker low oil circuit breaker air break circuit breaker Sf6 CB bulk oil circuit breaker low oil circuit breaker air break circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear ________ relay is preferred for phase fault on short transmission line. Reactance Impedance Induction type None of these Reactance Impedance Induction type None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear In a single bus-bar system there will be complete shut down when fault occurs with respect to earthing fault occurs on neutral line two or more faults occur simultaneously fault occurs on the bus itself fault occurs with respect to earthing fault occurs on neutral line two or more faults occur simultaneously fault occurs on the bus itself ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The voltage appearing across the contacts after opening of the circuit breaker is called surge voltage operating voltage arc voltage recovery voltage surge voltage operating voltage arc voltage recovery voltage ANSWER DOWNLOAD EXAMIANS APP
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