To limit short-circuit current in a power system are used______________?

Related Mcqs:

Directional relays are based on flow of____________?

A. power B. current C. voltage wave D. all of the above...

When a transmission line is energized, the wave that propagates on it is____________?

A. current wave only B. voltage wave only C. Both (A) and (B) D. power factor wave only...

Induction cup relay is operated due to changes in________________?

A. current B. voltage C. impedance D. all of the above...

The inverse definite mean time relays are used for over current and earth fault protection of transformer against_________________?

A. heavy loads B. internal short-circuits C. external short-circuits D. all of the above...

Air blast circuit breakers for 400 kV power system are designed to operate in_______________?

A. 100 microsecond B. 50 millisecond C. 0.5 sec D. 0.1 sec...