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Electrostatics

Study 180 Electrical Engineering MCQs with correct answers and explanations.

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21Electrical EngineeringMedium

Equipotential planes are________?

Aparallel to one another

Bintersecting

Cnon parallel to one another

Dcircular

Correct answer

A. parallel to one another

Explanation

The correct answer is parallel to one another.

22Electrical EngineeringMedium

A condenser suitable for D.C. only is________?

Apoled aluminium electrolytic condenser

Bmetallic plate variable gang condenser

Coil impregrated paper condenser

Dmetallic paper capacitor

Correct answer

A. poled aluminium electrolytic condenser

Explanation

The correct answer is poled aluminium electrolytic condenser.

23Electrical EngineeringMedium

The capacitor preferred for high frequency circuits is________?

Aair capacitor

Belectrolytic capacitor

Cnone of the above

Dmica capacitor

Correct answer

D. mica capacitor

Explanation

The correct answer is mica capacitor.

24Electrical EngineeringMedium

________field is associated with the capacitor?

ABoth (A) and (B)

BMagnetic

CNone of the above

DElectric

Correct answer

D. Electric

Explanation

The correct answer is Electric.

25Electrical EngineeringMedium

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________?

Aalright

Bopen circuited

Cleaky

Dshort-circuited

Correct answer

C. leaky

Explanation

The correct answer is leaky.

26Electrical EngineeringMedium

is that property of a capacitor which delays any change of voltage across it?

ACapacitance

BPotential gradient

CNone of the above

DInductance

Correct answer

A. Capacitance

Explanation

The correct answer is Capacitance.

27Electrical EngineeringMedium

The relative permittivity of free space is given by________?

A10

B100

C1000

Correct answer

D. 1

Explanation

The correct answer is 1.

28Electrical EngineeringMedium

A paper capacitor is usually available in the form of________?

Adisc

Brolled foil

Cmeshed plates

Dtubes

Correct answer

B. rolled foil

Explanation

The correct answer is rolled foil.

29Electrical EngineeringMedium

An uncharged conductor is placed near a charged conductor, then________?

Athe uncharged conductor gets charged by induction and then attracted towards the charging body

Bthe uncharged conductor is attracted first and then charged by induction

Cit remains as such

Dthe uncharged conductor gets charged by conduction

Correct answer

A. the uncharged conductor gets charged by induction and then attracted towards the charging body

Explanation

The correct answer is the uncharged conductor gets charged by induction and then attracted towards the charging body.

30Electrical EngineeringMedium

The capacity of capacitor bank used in power factor correction is expressed in terms of________?

AkVA

BkW

Cvolts

DkVAR

Correct answer

D. kVAR

Explanation

The correct answer is kVAR.

An uncharged conductor is placed near a charged conductor, then________?

Athe uncharged conductor gets charged by induction and then attracted towards the charging body

Bthe uncharged conductor is attracted first and then charged by induction

Cit remains as such

Dthe uncharged conductor gets charged by conduction

Correct answer

A. the uncharged conductor gets charged by induction and then attracted towards the charging body

Explanation

The correct answer is the uncharged conductor gets charged by induction and then attracted towards the charging body.