AC 3 Phase Induction motor MCQ with Answers

AC 3 Phase Induction motor MCQ with Answers

21) Which type of starter is used with reduced voltage tappings for 3 phase induction motor?

Answer is:

Auto transformer starter

22) How the voltage is reduced in auto transformer starter at the time of starting?

Answer is:

By adjusting the tappings by handle

23) Which induction motor, the external resistance is added to rotor circuit?

Answer is:

Slip ring induction motor

24) Which motor is used to produce high starting torque at variable speed?

Answer is:

3 Phase slip ring induction motor

25) Why slip ring induction motor is fitted with wound rotor?

Answer is:

To get high starting and running torque

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