Switch Gear In a single bus-bar system there will be complete shut down when fault occurs with respect to earthing fault occurs on the bus itself fault occurs on neutral line two or more faults occur simultaneously fault occurs with respect to earthing fault occurs on the bus itself fault occurs on neutral line two or more faults occur simultaneously ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Interruption of large currents by relay requires arc suppressing blow out coils high speed opening of contacts all of these wide separation of the opened contacts arc suppressing blow out coils high speed opening of contacts all of these wide separation of the opened contacts ANSWER DOWNLOAD EXAMIANS APP
Switch Gear protection of fuses is generally not used beyond 50 A 200 A 20 A 100 A 50 A 200 A 20 A 100 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A circuit breaker must perform the duty of carrying fault current for a short time being closed on to a fault opening the faulty circuit and breaking the fault current All of these carrying fault current for a short time being closed on to a fault opening the faulty circuit and breaking the fault current All of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Resistance grounding is used for voltage between 11 kv to 33 kv 33 kV to 66 kV None of these 3.3 kV to 11 kv 11 kv to 33 kv 33 kV to 66 kV None of these 3.3 kV to 11 kv 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 clearing time lag time lead time operation time clearing time lag time lead time operation time ANSWER DOWNLOAD EXAMIANS APP
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