Switch Gear Circuit breakers usually operate under transient state of short circuit current after dc component has ceased steady state of short circuit current sub-transient state of short circuit current transient state of short circuit current after dc component has ceased steady state of short circuit current sub-transient state of short circuit current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The time of closing the cycle, in modern circuit breakers is 0.01 sec 0.10 sec 0.003 sec 0.001 sec 0.01 sec 0.10 sec 0.003 sec 0.001 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The single phasing relays are used for the protection of two single phase motors running in parallel three phase motors single phase motors only two phase motors only two single phase motors running in parallel three phase motors single phase motors only two phase motors only ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Interruption of large currents by relay requires arc suppressing blow out coils wide separation of the opened contacts high speed opening of contacts all of these arc suppressing blow out coils wide separation of the opened contacts high speed opening of contacts all of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following circuit breakers is prefered for EHT applications ? bulk oil circuit breaker air break circuit breaker Sf6 CB low oil circuit breaker bulk oil circuit breaker air break circuit breaker Sf6 CB low oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fault that imposes severest duty on the circuit breaker is all three lines short-circuited line to line fault line to ground fault two lines to ground fault all three lines short-circuited line to line fault line to ground fault two lines to ground fault ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS