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 The rating of a circuit breaker is generally determined on the basis of symmetrical fault current double line to ground fault current single line to ground fault current line to line fault current symmetrical fault current double line to ground fault current single line to ground fault current line to line fault current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Directional relay are based on flow of All of these power voltage wave current All of these power voltage wave current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear In a circuit breaker the time duration from the instant of the fault to extinction of arc is known as clearing time lead time operation time lag time clearing time lead time operation time lag time ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arcing contacts in a circuit breaker are made of aluminium alloy porcelain electrolytic copper copper tungsten alloy aluminium alloy porcelain electrolytic copper copper tungsten alloy ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fuse wire, in D.C. circuits, is inserted in positive circuit only Both of the listed here negative circuit only none of the listed here positive circuit only Both of the listed here negative circuit only none of the listed here ANSWER DOWNLOAD EXAMIANS APP
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