Electrical Engineering MCQs

Page No. 153

A fuse is connected_______________?


ain series with circuit


b in parallel with circuit


ceither in series or in parallel with circuit


dnone of the above



The steady state stability of the power system can be increased by_____________?


aconnecting lines in parallel


b connecting lines in series


cusing machines of high impedance


d reducing the excitation of machines



Series capacitors are used to_________________?


acompensate for line inductive reactance


bcompensate for line capacitive reactance


cimprove line voltage


dnone of the above



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


ainversely proportional to the current


binversely proportional to the square of the current


cproportional to the current


dproportional to square of the current



Admittance relay is __________ relay?


a impedance


bdirectional


cnon-directional


dnone of the above


View Answer directional

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


a100 microsecond


b50 millisecond


c0.5 sec


d0.1 sec


View Answer 50 millisecond

The fuse wire, in D.C. circuits, is inserted in____________?


anegative circuit only


b positive circuit only


cboth (A) and (B)


deither (A) or (B)


View Answer both (A) and (B)

A fuse is never inserted in____________?


aneutral wire


bnegative of D.C. circuit


cpositive of D.C. circuit


dphase dine


View Answer neutral wire

A switchgear is device used for_____________?


a interrupting an electrical circuit


bswitching an electrical circuit 111.


cswitching and controlling an electrical circuit


dswitching, controlling and protecting the electrical circuit and equipment



The information to the circuit breaker under fault conditions is provided by____________?


arelay


brewirable fuse


cH.R.C. only


dall of the above


View Answer relay

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