Switch Gear Overheating of relay contacts or contact born out is due to too low contact pressure slow making and breaking of load circuit contacts all of these foreign matter on the contact surface too low contact pressure slow making and breaking of load circuit contacts all of these foreign matter on the contact surface ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The relay operating coil is supplied through power transformer current transformer fuse None of these power transformer current transformer fuse None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Wave trap is used to trap waves of power frequencies either of the above higher frequencies entering generator or transformer units None of these power frequencies either of the above higher frequencies entering generator or transformer units None of these 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 lead time operation time clearing time lag time lead time operation time clearing time lag time ANSWER DOWNLOAD EXAMIANS APP
Switch Gear SF6 gas is lighter than air has pungent small is yellow in colour is nontoxic None of these is lighter than air has pungent small is yellow in colour is nontoxic None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The rating of a circuit breaker is generally determined on the basis of line to line fault current single line to ground fault current symmetrical fault current double line to ground fault current line to line fault current single line to ground fault current symmetrical fault current double line to ground fault current ANSWER DOWNLOAD EXAMIANS APP
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