Electrical Engineering Mcqs Practice Test

Question 1

An over excited synchronous motor is used for____________?

Accepted Answer

D. power factor corrections

Question 2

Regenerative method of braking is based on that___________?

Accepted Answer

C. back e.m.f. of rotor is more than the applied voltage

Question 3

Solid Grounding is used for Voltages?

Accepted Answer

C. Below 660 v

Question 4

select the only wrong statement?

Accepted Answer

D. an electrically neutral body is repelled both positively and negatively charged bodies

Question 5

select the correct statement?

Accepted Answer

D. all the above statements are true

Question 6

Farad is the unit of___________?

Accepted Answer

C. capacitance

Question 7

Which of the following is the major consideration to evolve a good design?

Accepted Answer

D. All of the above

Question 8

1 Coulomb = ___________ e.

Accepted Answer

B. 6.25×1018

Question 9

A turbine is tripped when ?

Accepted Answer

B. speed shoots up

Question 10

Which instrument is used to measure the power of electric circuit ?

Accepted Answer

C.\xa0Wattmeter

Question 11

If the distance between the two point charges become half then force between them becomes______________?

Accepted Answer

C. four times

Question 12

The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?

Accepted Answer

B. 900N

Question 13

Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become_____________?

Accepted Answer

C. 4 times of its original value

Question 14

An electric field can deflect_______________?

Accepted Answer

D. None

Question 15

Electric flux linked with a surface will be maximum when____________?

Accepted Answer

B. The surface is held perpendicular to the electric field

Question 16

The electric lines of force are____________?

Accepted Answer

A. imaginary

Question 17

If free space between the plates of a capacitor is replaced by a dielectric_____________?

Accepted Answer

C. The potential difference decreases but both capacitance and energy increase

Question 18

A hollow metallic sphere of 8cm diameter is charged with 4 x 10 8C. The potential on its surface will be_________________?

Accepted Answer

B. 9000 volts

Question 19

Potential difference is the work done in moving unit positive charge form one point to another________________?

Accepted Answer

B. against electric intensity

Question 20

The value of the capacitance depends upon the________________?

Accepted Answer

C. geometry of the capacitor