MCQs on Synchronous Motor

MCQs on Synchronous Motor

Professional Development

12 Qs

quiz-placeholder

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MCQs on Synchronous Motor

MCQs on Synchronous Motor

Assessment

Quiz

Others

Professional Development

Hard

Created by

penumala sravanthi

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the principle of operation of a synchronous motor?

Electromagnetic induction

Interaction between a rotating magnetic field and a stationary magnetic field

Lenz's law

Faraday's law of electromagnetic induction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the synchronous speed of a 4-pole, 50 Hz synchronous motor?

1000 rpm

1500 rpm

3000 rpm

750 rpm

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the power factor of a synchronous motor?

Always lagging

Always leading

Can be leading, lagging, or unity

Always unity

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of damper windings in a synchronous motor?

To improve the power factor

To provide starting torque

To stabilize the rotor

To reduce losses

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is a synchronous motor started?

By directly connecting it to the supply

By using a starter motor

By using a pony motor

By using damper windings and external excitation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of increasing the field excitation of a synchronous motor?

Increases the power factor

Decreases the power factor

Has no effect on the power factor

Increases the speed

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the V-curve of a synchronous motor?

A plot of armature current vs. field current at constant load

A plot of power factor vs. field current at constant load

A plot of speed vs. field current at constant load

A plot of torque vs. field current at constant load

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