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Electrician
Electrician Set-2
DC Motor
22

DC Motor MCQ with Answers

22) Why series motor produce high torque and speed initially without load?

Absence of back emf

Load current flows through field winding

Armature current and field current are same

Series field winding wound with thick wire

Answer is:

Absence of back emf

DC Motor MCQ with Answers

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Related DC Motor MCQ with Answers

23) Why the series field is short circuited at the time of starting in differential compound motor?

To reduce the starting current

To increase the speed of motor

To decrease the speed of motor

To maintain proper direction of rotation

Answer is:

To maintain proper direction of rotation

24) Which is the most effective method of balancing armature?

Static balancing

Dynamic balancing

Attached with counter balancing

Plugged with lead weight balancing

Answer is:

Dynamic balancing

25) Which material is used for starting resistance of DC starters?

Eureka

Nichrome

Manganin

Constantine

Answer is:

Eureka

26) Which DC compound motor is operated at constant speed under varying load?

Differential long shunt

Cumulative long shunt

Differential short shunt

Cumulative short shunt

Answer is:

Cumulative long shunt

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