electrical

Electrostatics and Capacitance MCQ With Answers Page - 4

1.

A capacitor consists of two

Answer/ Hint      

Answer : D

Explanation :

2.

Permittivity is expressed in

Answer/ Hint      

Answer : B

Explanation :

3.

Dielectric strength of a material depends on

Answer/ Hint      

Answer : D

Explanation :

4.

What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it?

Answer/ Hint      

Answer : C

Explanation :

5.

Its molecular structure will get changed

Answer/ Hint      

Answer : D

Explanation :

6.

1 volt/meter is same as

Answer/ Hint      

Answer : C

Explanation :

7.

One volt is same as

Answer/ Hint      

Answer : A

Explanation :

8.

The capacitance between two plates increase with

Answer/ Hint      

Answer : D

Explanation :

9.

The capacitance c is charged through a resistance R. the time constant of the charging circuit is given by

Answer/ Hint      

Answer : C

Explanation :

10.

The bridge used for the measurement the value of the capacitance is

Answer/ Hint      

Answer : C

Explanation :

11.

A capacitor of 80 µF is charged to a p.d of 250 v. the charge acquired by it is

Answer/ Hint      

Answer : A

Explanation :

12.

If an ohm meter reading immediately goes practically to zero and stays there, capacitor is

Answer/ Hint      

Answer : B

Explanation :

13.

A capacitance of 1 µF equals to

Answer/ Hint      

Answer : C

Explanation :

14.

Voltage applied across a dielectric produces an electrostatic fields 50 times greater than air. The dielectric constant of the dielectric will be

Answer/ Hint      

Answer : D

Explanation :

15.

Out of the following capacitors of identical rating which one will have the smallest dimensions?

Answer/ Hint      

Answer : C

Explanation :

16.

An uncharged conductor is placed near a charged conductor, then

Answer/ Hint      

Answer : B

Explanation :

17.

The presence of uncharged conductor near a charged one increases the

Answer/ Hint      

Answer : B

Explanation :

18.

Paper condenser is

Answer/ Hint      

Answer : B

Explanation :

19.

For a good 0.05 µF capacitor ohmmeter reading should

Answer/ Hint      

Answer : A

Explanation :

20.

The ohm-meter reading of a short-circuited capacitor is

Answer/ Hint      

Answer : D

Explanation :

21.

Which of the following capacitor preferred for high frequency circuits?

Answer/ Hint      

Answer : C

Explanation :

22.

 An electrolytic capacitor is generally made to provide

Answer/ Hint      

Answer : D

Explanation :

23.

In order to remove static electricity from machinery

Answer/ Hint      

Answer : C

Explanation :

24.

If a third equal and similar charge is placed between two equal and similar charges, then this third charge will be

Answer/ Hint      

Answer : B

Explanation :

25.

A region around a stationary electric charge has

Answer/ Hint      

Answer : A

Explanation :

26.

The minimum value of potential gradient in a cable occurs in

Answer/ Hint      

Answer : A

Explanation :

27.

Dielectric strength of medium

Answer/ Hint      

Answer : D

Explanation :

28.

A charge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 103 N, is known as

Answer/ Hint      

Answer : B

Explanation :

29.

Dielectric strength of medium is usually expressed in

Answer/ Hint      

Answer : C

Explanation :

30.

Which of the following medium will have highest value of relative permittivity?

Answer/ Hint      

Answer : A

Explanation :

31.

“The force of attraction or repulsion between two charges Q1 and Q2 at a distance d meters apart is proportional to the product of charges and inversely proportional to the square of the distance between the two charges”. The above statement is associated with

Answer/ Hint      

Answer : C

Explanation :

32.

Which is the most superior dielectric out of the following?

Answer/ Hint      

Answer : C

Explanation :

33.

When a dielectric is placed in an electric field, the field strength

Answer/ Hint      

Answer : A

Explanation :

34.

To prevent the generation of static charges on a rubber or flat leather

Answer/ Hint      

Answer : B

Explanation :

35.

A capacitor having a capacitance of 40µF is connected across 250 V D.C source. The charging current will be least

Answer/ Hint      

Answer : A

Explanation :

36.

A variable capacitance is one whose capacitance

Answer/ Hint      

Answer : C

Explanation :

37.

In case of lossy capacitor, its series equivalent resistance value will be

Answer/ Hint      

Answer : A

Explanation :

38.

Which of the following capacitor is preferred in case of single phase motor?

Answer/ Hint      

Answer : C

Explanation :

39.

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

Answer/ Hint      

Answer : B

Explanation :

40.

If Q and C be the charge and capacity of a condenser, then the enrgy store in the capacitor is given by

Answer/ Hint      

Answer : C

Explanation :

<< Previous
Electrostatics and Capacitance MCQ With Answers Page - 4