Switch Gear Overheating of relay contacts or contact born out is due to foreign matter on the contact surface slow making and breaking of load circuit contacts all of these too low contact pressure foreign matter on the contact surface slow making and breaking of load circuit contacts all of these too low contact pressure ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Current chopping mainly occurs in oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf 6 circuit breaker oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf 6 circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following is the least expensive protection for over current is low voltage system ? oil circuit breaker rewireable fuse air break circuit breaker isolator oil circuit breaker rewireable fuse air break circuit breaker isolator 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 Distance relays are generally impedance relays none of these reactance relays split-phase relays impedance relays none of these reactance relays split-phase relays ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The voltage appearing across the contacts after opening of the circuit breaker is called arc voltage surge voltage recovery voltage operating voltage arc voltage surge voltage recovery voltage operating voltage ANSWER DOWNLOAD EXAMIANS APP
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