Electrical Engineering MCQs

Page No. 70

The pointer of an indicating instrument should be______________?


avery light


bvery heavy


ceither A. or B


d neither A. nor B.


View Answer very light

Which of the following meters are not used on D.C. circuits______________?


aMercury motor meters


bCommutator motor meters


c Induction meters


dNone of the above


View Answer Induction meters

In a portable instrument, the controlling torque is provided by_____________?


aspring


bgravity


ceddy currents


d all of the above


View Answer spring

In majority of instruments damping is provided by______________?


afluid friction


bspring


ceddy currents


dall of the above


View Answer eddy currents

The disc of an instrument using eddy current damping should be of________________?


aconducting and magnetic material


bnon-conducting and magnetic material


cconducting and non-magnetic material


dnone of the above



The function of shunt in an ammeter is to______________?


aby pass the current


bincrease the sensitivity of the ammeter


cincrease the resistance of ammeter


dnone of the above


View Answer by pass the current

A potentiometer may be used for_________________?


ameasurement of resistance


bmeasurement of current


ccalibration of ammeter


dall of the above


View Answer all of the above

The chemical effect of current is used in ______________?


aD.C. ammeter hour meter


bD.C. ammeter


c D.C. energy meter


dnone of the above



For handling greater currents induction wattmeters are used in conjunction with______________?


apotential transformers


bcurrent transformers


cpower transformers


d either of the above


View Answer current transformers

is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another_______________?


a Tangent galvanometer


bMeggar


cCurrent transformer


dNone of the above


View Answer Meggar

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