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MCQ ON SYNCHRONOUS MOTOR PAGE - 1

1.

An electric motor in which both the rotor and stator fields rotates with the same speed is called …. motor

Answer/ Hint      

Answer : C

Explanation :

2.

When load on a normally excited synchronous motor is increases, its power factor tends to

Answer/ Hint      

Answer : B

Explanation :

3.

If the field of a synchronous motor is under excited the power factor will be

Answer/ Hint      

Answer : A

Explanation :

4.

In a synchronous motor, the rotor copper losses are met by

Answer/ Hint      

Answer : D

Explanation :

5.

Synchronous capacity is

Answer/ Hint      

Answer : C

Explanation :

6.

The maximum value of torque angle in a synchronous motor is ……. degrees electrical

Answer/ Hint      

Answer : B

Explanation :

7.

The effect of increasing load on a synchronous motor running what normal excitation is to

Answer/ Hint      

Answer : C

Explanation :

8.

The direction of rotation of a synchronous motor can be reversed by reversing

Answer/ Hint      

Answer : B

Explanation :

9.

A synchronous machine is called a doubly excited machine, because,

Answer/ Hint      

Answer : C

Explanation :

10.

In a synchronous motor, damper winding is provided in order to

Answer/ Hint      

Answer : D

Explanation :

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