Switch Gear Which of the following CB's is generally used in railways applications ? sf 6 circuit breaker bulk oil circuit breaker air break circuit breaker low oil circuit breaker sf 6 circuit breaker bulk oil circuit breaker air break circuit breaker low oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Current chopping mainly occurs in oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf 6 circuit breaker oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf 6 circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The voltage appearing across the contacts after opening of the circuit breaker is called operating voltage surge voltage recovery voltage arc voltage operating voltage surge voltage recovery voltage arc voltage ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The rated secondary current of current transformer for relays is generally 20 A 10 A 5 A 30 A 20 A 10 A 5 A 30 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Overheating of relay contacts or contact born out is due to foreign matter on the contact surface slow making and breaking of load circuit contacts too low contact pressure all of these foreign matter on the contact surface slow making and breaking of load circuit contacts too low contact pressure all of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Distance relays are generally none of these split-phase relays impedance relays reactance relays none of these split-phase relays impedance relays reactance relays ANSWER DOWNLOAD EXAMIANS APP
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