Switch Gear The arcing contacts in a circuit breaker are made of copper tungsten alloy aluminium alloy electrolytic copper porcelain copper tungsten alloy aluminium alloy electrolytic copper porcelain ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Outdoor switchgear is generally used for voltage beyond 33 kV 66 kV 11 kV 132 kV 33 kV 66 kV 11 kV 132 kV 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 insulate the contacts from switch body 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 ANSWER DOWNLOAD EXAMIANS APP
Switch Gear SF6 gas has pungent small is nontoxic None of these is yellow in colour is lighter than air has pungent small is nontoxic None of these is yellow in colour is lighter than air ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Most of the relays on service on electric power system are electro-mechanical relays thermal relays None of these electronic relays electro-mechanical relays thermal relays None of these electronic relays ANSWER DOWNLOAD EXAMIANS APP
Switch Gear To limit short-circuit current in a power system are used isolators earth wires reactors H.R. fuses isolators earth wires reactors H.R. fuses ANSWER DOWNLOAD EXAMIANS APP
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