Which of the following is the least expensive protection for overcurrent is low voltage system ?

Related Mcqs:

D.C. shunt relays are made of_____________?

A. few turns of thin wire B. few turns of thick wire C. many turns of thin wire D. many turns of thick wire...

The current zero interruption, in oil and air blast circuit breakers, is achieved by_______________?

A. lengthening of the gap B. cooling and blast effect C. both A. and B D. deionizing the oil with forced air E. none of the above...

Insulation resistance of high voltage circuit breakers is more than________________?

A. 1 mega ohms B. 10 mega ohms C. 100 mega ohms D. 500 mega ohms...

The torque produced in induction type relay (shaded pole structure) is_____________?

A. inversely proportional to the current B. inversely proportional to the square of the current C. proportional to the current D. proportional to square of the current...

The fuse rating is expressed in terms of_____________?

A. current B. voltage C. VAR D. kVA...