SSC JE EE Score Booster Quiz 3 (Power System)

An overcurrent relay having current setting of 125 % is connected to a supply circuit through a current transformer of 400/5 A. The pick-up current is

A circuit breaker is rated as 1500 A, 1000 MVA, 33 kV, 3-second, 3-phase oil circuit breaker. The rated symmetrical breaking current is

The rate of rise of restriking voltage depends on

A 50 Hz, 11 kV, 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase and is connected to a busbar through a circuit breaker. The distributed capacitance up to circuit breaker between phase and neutral is 0.01 µF. The peak re-striking voltage across the contact of the breaker is

A circuit breaker is rated as 1500 A, 1000 MVA, 33 kV, 3-second, 3-phase oil circuit breaker. The breaking capacity of the circuit breaker is