Switch Gear Back up protection is generally used for protection against short-circuit faults only open-circuit faults only both open and short-circuit faults None of these short-circuit faults only open-circuit faults only both open and short-circuit faults None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arcing contacts in a circuit breaker are made of aluminium alloy porcelain copper tungsten alloy electrolytic copper aluminium alloy porcelain copper tungsten alloy electrolytic copper ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to extinguish the arc All of these lubricate the contacts None of these insulate the contacts from switch body extinguish the arc All of these lubricate the contacts None of these insulate the contacts from switch body ANSWER DOWNLOAD EXAMIANS APP
Switch Gear An isolator is installed to operate the relay of circuit breaker always independent of the position of circuit breaker as a substitute for circuit breaker generally on both sides of a circuit breaker to operate the relay of circuit breaker always independent of the position of circuit breaker as a substitute for circuit breaker generally on both sides of a circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A fuse element is generally made of silver brass iron steel silver brass iron steel ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Most of the relays on service on electric power system are electro-mechanical relays None of these thermal relays electronic relays electro-mechanical relays None of these thermal relays electronic relays ANSWER DOWNLOAD EXAMIANS APP
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