Electrical Engineering MCQs

Page No. 191

Acharge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 10 N, is known as_____________?


amilli-coulomb


bmicro-coulomb


c pico-coulomb


dcoulomb


View Answer micro-coulomb

If a third equal and similar charge is placed between two equal and similar charges, then this third charge will_____________?


amove out of the field of influence of the two charges


bremain in stable equilibrium


c not be in equilibrium


dbe in unstable equilibrium



Which of the following capacitors preferred for high frequency circuits ?


aAir capacitor


bElectrolytic capacitor


cMica capacitor


dnone of the above


View Answer Mica capacitor

In order to remove static electricity from machinery___________?


aconstruct insulated cabins


b insulate the machinery


cground the framework


dhumidify the surroundings


View Answer ground the framework

A region around a stationary electric charge has__________?


a an electric field


ba magnetic field


cboth A. and (6)


d none of the above


View Answer an electric field

Dielectric strength of a medium is usually expressed in____________?


a J/mm


b C/m2


ckV/mm


dN/mm


View Answer kV/mm

Which is the most superior dielectric out of the following ?


aAirblue


bGlass


cBakelite


dPaper


View Answer Bakelite

To prevent the generation of static charges on rubber or flat leather__________?


a surface is moistened


b conductive dressing is done


ctalcum powder is sprayed on the surface


dNone



A capacitance is a circuit component that opposes the change in circuit__________?


aCurrent


bVoltage


cimpedance


dNone of the above


View Answer Voltage

In a capacitor, the electric charge is stored in_________?


ametal plates


bdielectric


cdielectric as well as metal plates


dnone of the above


View Answer dielectric

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