Single Phase Induction Motors MCQ Questions & Answers

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Learn Single Phase Induction Motors MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Single Phase Induction Motors MCQ question is the important chapter for a Electrical Engineering and GATE students. Page-6 section-1

Each section contains 100 MCQs on Single Phase Induction Motors .

In a shaded pole motor, the shading coil usually consist of

A) a single turn of heavy wire which is in parallel with running winding B) a single turn of heavy copper wire which is short-circuited and carries only induced current C) a multilayer fine gauge copper wire in parallel with running winding D) none of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The shaded pole motor is used for

A) high starting torque B) low starting torque C) medium starting torque D) very high starting torque

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

When a D.C. series motor is connected to A.C. supply, the power factor will be low because of

A) high inductance of field and armature circuits B) induced current in rotor due to variations of flux C) fine copper wire winding D) none of the above

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The motor used on small lathes is usually

A) universal motor B) D.C. shunt motor C) single-phase capacitor run motor D) 3-phase synchronous motor

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The speed of a universal motor is generally reduced by using

A) gear trains B) V-belts C) brakes D) chains

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The speed of a universal motor is usually reduced by using

A) gearing B) belts C) brakes D) chains

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The rotor developed by a single-phase motor at starting is

A) more than rated torque B) rated torque C) less than the rated torque D) zero

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Torque developed by a single phase induction motor at starting is

A) pulsating B) uniform C) none of the above D) nil

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Speed control of a universal motor is achieved by

A) Varying field flux with tapped field windings B) Connecting rheostat in series C) Applying variable voltage by means of silicon controlled rectifier D) All of the above methods

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following statements regarding two value capacitor motor is incorrect ?

A) It is a reversing motor B) It is preferred to permanent-split single-value capacitor motor where frequent reversals are required C) It has low starting as well as rushing currents D) It has high starting torque

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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Single Phase Induction Motors MCQ Questions & Answers | Electrical Engineering