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 insulate the contacts from switch body extinguish the arc lubricate the contacts None of these All of these insulate the contacts from switch body extinguish the arc lubricate the contacts None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The transient voltage that appears across the contacts at the instant of arc extinction is called peak voltage recovery voltage supply voltage restriking voltage peak voltage recovery voltage supply voltage restriking voltage 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 operation time lag time lead time clearing time operation time lag time lead time ANSWER DOWNLOAD EXAMIANS APP
Switch Gear In Railway applications ______ circuit breaker is used. air break SFe bulk oil minimum oil air break SFe bulk oil minimum oil ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The information to the circuit breaker under fault conditions is provided by H.R.'only relay All of these rewirable fuse H.R.'only relay All of these rewirable fuse ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For the protection of power station buildings against direct strokes the requirements are None of these interception interception, conduction and dissipation interception, conduction, dissipation and reflection interception and conduction None of these interception interception, conduction and dissipation interception, conduction, dissipation and reflection interception and conduction ANSWER DOWNLOAD EXAMIANS APP
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