Electrical Engineering MCQs

Page No. 184

Which of the following capacitors is marked for polarity ?


aAir


bPaper


cMica


d Electrolytic


View Answer Electrolytic

The power dissipated in a pure capacitor is______________?


azero


bproportional to applied voltage


cproportional to value of capacitance


dboth (B) and (C) above


View Answer zero

When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will______________?


aremain uncharged


bdecrease


cincrease


d become zero


View Answer decrease

A capacitor consists of_____________?


a two insulators separated by a conductor


b two conductors separated by an insulator


ctwo insulators only


dtwo conductors only



A paper capacitor is usually available in the form of_____________?


atubes


brolled foil


cdisc


d meshed plates


View Answer rolled foil

The absolute permittivity of free space is given by_____________?


a8.854 x 1(T9 F/m)


b8.854 x 1(T10 F/m)


c 8.854 x KT11 F/m


d8.854 x 10″12 F/m


View Answer 8.854 x 1(T10 F/m)

Which of the following capacitors can be used for temperature compensation ?


aAir capacitor


b Ceramic capacitor


cPaper capacitor


dNone of the above


View Answer Ceramic capacitor

The value of dielectric constant for vacuum is taken as____________?


azero


b 1


c4


d10


View Answer 1

While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?


a short-circuited


bopen circuited


calright


d leaky


View Answer leaky

Electric field intensity is a quantity_____________?


a scalar


bvector


cboth A. and (6)


dnone of the above


View Answer vector

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