Switch Gear Which of the following CB's is generally used in railways applications ? bulk oil circuit breaker air break circuit breaker sf 6 circuit breaker low oil circuit breaker bulk oil circuit breaker air break circuit breaker sf 6 circuit breaker low oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear An isolator is installed always independent of the position of circuit breaker as a substitute for circuit breaker generally on both sides of a circuit breaker to operate the relay of circuit breaker always independent of the position of circuit breaker as a substitute for circuit breaker generally on both sides of a circuit breaker to operate the relay of circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fault that imposes severest duty on the circuit breaker is all three lines short-circuited two lines to ground fault line to line fault line to ground fault all three lines short-circuited two lines to ground fault line to line fault line to ground fault ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Air blast circuit breaker is used for repeated duty short duty over currents intermittent duty repeated duty short duty over currents intermittent duty ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Arc in a circuit breaker behaves as a capacitive reactance a resistance decreasing with voltage rise across the arc an inductive reactance a resistance increasing with voltage rise across the arc a capacitive reactance a resistance decreasing with voltage rise across the arc an inductive reactance a resistance increasing with voltage rise across the arc ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The transient voltage that appears across the contacts at the instant of arc extinction is called recovery voltage peak voltage supply voltage restriking voltage recovery voltage peak voltage supply voltage restriking voltage ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS