electrical

Electrostatics and Capacitance MCQ With Answers Page - 2

1.

The sparking between two electrical contacts can be reduced by inserting a

Answer/ Hint      

Answer : A

Explanation :

2.

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

Answer/ Hint      

Answer : C

Explanation :

3.

The power dissipated at a pure capacitor is

Answer/ Hint      

Answer : A

Explanation :

4.

In a capacitor circuit

Answer/ Hint      

Answer : B

Explanation :

5.

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

Answer/ Hint      

Answer : B

Explanation :

6.

Capacitance increase with

Answer/ Hint      

Answer : A

Explanation :

7.

A capacitor consists of

Answer/ Hint      

Answer : B

Explanation :

8.

A gang condenser is a

Answer/ Hint      

Answer : B

Explanation :

9.

A paper capacitor is usually available in the form of

Answer/ Hint      

Answer : B

Explanation :

10.

Air capacitor is generally available in the range

Answer/ Hint      

Answer : A

Explanation :

11.

The unit of capacitance is

Answer/ Hint      

Answer : C

Explanation :

12.

A capacitor charged 200 V has 2000 µC of charge. The value of capacitance will be

Answer/ Hint      

Answer : B

Explanation :

13.

A capacitor in a circuit become hot and ultimately exploded due to wrong connections, which type of capacitor it could be?

Answer/ Hint      

Answer : C

Explanation :

14.

The ratio of electric flux density to electric field intensity is called …… of the medium

Answer/ Hint      

Answer : B

Explanation :

15.

Energy stored in the electric field of a capacitor C when charged from a D.C source voltage V equal to ………. Joules.

Answer/ Hint      

Answer : A

Explanation :

16.

The absolute permittivity of a free space is given by

Answer/ Hint      

Answer : D

Explanation :

17.

The relative permittivity of a free space is given by

Answer/ Hint      

Answer : A

Explanation :

18.

Electric field intensity is a …….quantity

Answer/ Hint      

Answer : B

Explanation :

19.

When 4 volts e.m.f is applied across 1 farad capacitor , it will store energy of

Answer/ Hint      

Answer : D

Explanation :

20.

With steady D.C voltage from a battery applied to a capacitance, after it charges to the battery voltage, the current in the circuit

Answer/ Hint      

Answer : C

Explanation :

21.

The capacitor preferred for high frequency circuits is

Answer/ Hint      

Answer : B

Explanation :

22.

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

Answer/ Hint      

Answer : C

Explanation :

23.

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

Answer/ Hint      

Answer : D

Explanation :

24.

If a 6 µF capacitor is charged to 200V, the charge in coulombs will be

Answer/ Hint      

Answer : C

Explanation :

25.

Which capacitor will be physically smaller for the same rating?

Answer/ Hint      

Answer : A

Explanation :

26.

What is the value of capacitance that must be connected in parallel with 50 pf condenser to make an equivalent capacitance of 150 pF?

Answer/ Hint      

Answer : B

Explanation :

27.

A mica capacitor and ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance?

Answer/ Hint      

Answer : A

Explanation :

28.

Which of the following material has least value of dielectric constant?

Answer/ Hint      

Answer : B

Explanation :

29.

Which of the following capacitors have the least value of breakdown voltage?

Answer/ Hint      

Answer : D

Explanation :

30.

The breakdown voltage of a paper capacitors is usually

Answer/ Hint      

Answer : B

Explanation :

31.

Dielectric constant for mica is nearly

Answer/ Hint      

Answer : C

Explanation :

32.

The value of dielectric constant for vacuum is taken as

Answer/ Hint      

Answer : B

Explanation :

33.

Which of the following capacitors is marked for polarity?

Answer/ Hint      

Answer : D

Explanation :

34.

Which of the following capacitor can be used for temperature compensations?

Answer/ Hint      

Answer : B

Explanation :

35.

Paper capacitor usually have the tolerance of

Answer/ Hint      

Answer : B

Explanation :

36.

For closer tolerances which of the following capacitors is usually preferred?

Answer/ Hint      

Answer : B

Explanation :

37.

The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be

Answer/ Hint      

Answer : D

Explanation :

38.

The units of volume charged density are

Answer/ Hint      

Answer : C

Explanation :

39.

“The surface integral of normal component of the electrical displacement D over any closed surface equals to the charge enclosed by the surface”
The above statement is associated with

Answer/ Hint      

Answer : A

Explanation :

40.

The electrons in the dielectric, get detached from the atoms under

Answer/ Hint      

Answer : D

Explanation :

<< Previous
Electrostatics and Capacitance MCQ With Answers Page - 2
Next >>