Switch Gear Which of the following circuit breakers is prefered for EHT applications ? Sf6 CB bulk oil circuit breaker air break circuit breaker low oil circuit breaker Sf6 CB bulk oil circuit breaker air break circuit breaker low oil circuit breaker 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 lubricate the contacts None of these All of these extinguish the arc insulate the contacts from switch body lubricate the contacts None of these All of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The time of closing the cycle, in modern circuit breakers is 0.10 sec 0.003 sec 0.001 sec 0.01 sec 0.10 sec 0.003 sec 0.001 sec 0.01 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Wave trap is used to trap waves of higher frequencies entering generator or transformer units either of the above None of these power frequencies higher frequencies entering generator or transformer units either of the above None of these power frequencies ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Distance relays are generally none of these impedance relays reactance relays split-phase relays none of these impedance relays reactance relays split-phase relays ANSWER DOWNLOAD EXAMIANS APP
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
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