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MCQ ON DC GENERATOR PAGE - 1

1.

If the axis of a moving coil is kept parallel to the flux then the E.M.F induced in the coil will be

Answer/ Hint      

Answer : C

Explanation :

2.

By rotating a conductor in a magnetic field, the induced E.M.F will be

Answer/ Hint      

Answer : B

Explanation :

3.

For inducing an emf of 1 volt in 1 second time, a conductor will have to cut:

Answer/ Hint      

Answer : C

Explanation :

4.

On doubling the supply frequency, the eddy current will:

Answer/ Hint      

Answer : B

Explanation :

5.

In order to reduce hysteresis losses, the cores of electrical machines are generally made of

Answer/ Hint      

Answer : D

Explanation :

6.

Which of the following statement is incorrect?

Answer/ Hint      

Answer : C

Explanation :

7.

Whenever a conductor cuts magnetic flux, an emf is induced in the same. The statement refers to

Answer/ Hint      

Answer : C

Explanation :

8.

The given figure shows a coil with a closed iron core what do the dotted lines represent?

Answer/ Hint      

Answer : D

Explanation :

9.

The magnetic flux shown in above fig. can be increased by

Answer/ Hint      

Answer : A

Explanation :

10.

The law which states that the induced a emf and current always opposes the cause producing it was presented by

Answer/ Hint      

Answer : A

Explanation :

11.

Degaussing is the process of

Answer/ Hint      

Answer : C

Explanation :

12.

An open circuit curve is drawn between

Answer/ Hint      

Answer : D

Explanation :

13.

In a level compound generator, full load voltage is found to be _____the terminal voltage

Answer/ Hint      

Answer : C

Explanation :

14.

In which type of d.c. machine poles is residual magnetism necessary

Answer/ Hint      

Answer : A

Explanation :

15.

Armature cores are commonly made of

Answer/ Hint      

Answer : B

Explanation :

16.

Lap winding has____ parallel paths

Answer/ Hint      

Answer : C

Explanation :

17.

The output voltage of a single loop generator is a

Answer/ Hint      

Answer : D

Explanation :

18.

What effect on the current flow takes plane on reversing the direction of movement of a conductor in the magnetic field of a generator

Answer/ Hint      

Answer : C

Explanation :

19.

In most generators the output voltage is induced by

Answer/ Hint      

Answer : B

Explanation :

20.

The shunt field of a compound generator is connected across both the series field and the armature. The connection is known as

Answer/ Hint      

Answer : A

Explanation :

21.

Generators are run in parallel for achieving the advantage of :

Answer/ Hint      

Answer : D

Explanation :

MCQ ON DC GENERATOR PAGE - 1
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