Switch Gear Overheating of relay contacts or contact born out is due to foreign matter on the contact surface too low contact pressure all of these slow making and breaking of load circuit contacts foreign matter on the contact surface too low contact pressure all of these slow making and breaking of load circuit contacts ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Minimum arcing voltage will be least in case of tungsten carbon silver graphite tungsten carbon silver graphite ANSWER DOWNLOAD EXAMIANS APP
Switch Gear To limit short-circuit current in a power system are used earth wires isolators H.R. fuses reactors earth wires isolators H.R. fuses reactors ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fuse wire, in DC circuit, is inserted in Both positive and negative circuit negative circuit only None of these positive circuit only Both positive and negative circuit negative circuit only None of these positive circuit only 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 lubricate the contacts extinguish the arc insulate the contacts from switch body None of these All of these lubricate the contacts extinguish the arc insulate the contacts from switch body None of these All of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following circuit breakers is prefered for EHT applications ? low oil circuit breaker Sf6 CB air break circuit breaker bulk oil circuit breaker low oil circuit breaker Sf6 CB air break circuit breaker bulk oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
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