Switch Gear The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to All of these lubricate the contacts None of these extinguish the arc insulate the contacts from switch body All of these lubricate the contacts None of these extinguish the arc insulate the contacts from switch body ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A circuit breaker must perform the duty of All of these being closed on to a fault opening the faulty circuit and breaking the fault current carrying fault current for a short time All of these being closed on to a fault opening the faulty circuit and breaking the fault current carrying fault current for a short time ANSWER DOWNLOAD EXAMIANS APP
Switch Gear protection of fuses is generally not used beyond 200 A 50 A 20 A 100 A 200 A 50 A 20 A 100 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Most of the relays on service on electric power system are thermal relays electro-mechanical relays None of these electronic relays thermal relays electro-mechanical relays None of these electronic relays ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A fuse in a motor circuit provides protection against overload short-circuit and overload None of these open circuit, short-circuit and overload overload short-circuit and overload None of these open circuit, short-circuit and overload ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For the same power, the least size is of vaccum circuit breaker air-blast circuit breaker sf6 circuit breaker oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf6 circuit breaker oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
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