Electrical Engineering MCQs

Page No. 62

In an energy meter braking torque is produced to________________?


asafe guard it against creep


bbrake the instrument


cbring energy meter to stand still


dmaintain steady speed and equal to driving torque



The power of a n-phase circuit can be measured by using a minimum of_______________?


a(n – 1) wattmeter elements


b n wattmeter elements


c (n + 1) wattmeter elements


d2n wattmeter elements



Which of the following is measured by using a vector voltmeter ?


aAmplifier gain and phase shift


bFiller transfer functions


cComplex insersion loss


dAll of the above


View Answer All of the above

Various adjustments in an energy meter include_______________?


a light load or friction


blag and creep


coverload and voltage compensation


dall of the above


View Answer all of the above

An instrument transformer is used to extend the range of______________?


ainduction instrument


belectrostatic instrument


cmoving coil ins`trument


dany of the above


View Answer induction instrument

Most sensitive galvanometer is_____________?


a elastic galvanometer


bvibration galvanometer


c Duddlb galvanometer


d spot ballistic galvanometer



The rectifier instrument is not free from_______________?


a temperature error


b wave shape error


c frequency error


dall of the above


View Answer frequency error

Systematic errors are_________________?


a instrumental errors


benvironmental errors


cobservational errors


dall of theall of the above above


View Answer all of the above

E.m.f. of a Weston cell is accurately measured by________________?


aelectrostatic voltmeter


bhot wire voltmeter


cisothermal voltmeter


d electrodynamic voltmeter



Operating torques in analogue instruments are_______________?


adeflecting and control


bdeflecting and damping


cdeflecting, control and damping


d vibration and balancing



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