Industrial Drivers MCQ Questions & Answers

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Heat control switches are used in

A) Transformers B) Cooling ranges C) Three phase induction motors D) Single phase

Discuss

Answer & Solution

Answer: Option B

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

In _________ method of staging three phase induction motors the starting voltage is not reduced.

A) Autotransformer B) Star-delta C) Slip ring D) Any of the above

Discuss

Answer & Solution

Answer: Option C

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

Battery operated scooter for braking uses

A) Plugging B) Mechanical braking C) Regenerative braking D) Rheostatic braking

Discuss

Answer & Solution

Answer: Option B

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

In squirrel cage induction motors which of the following methods of starting cannot be used?

A) Resistance in rotor circuit B) Resistance in stator circuit C) Autotransformer starting D) Star-delta starting

Discuss

Answer & Solution

Answer: Option A

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

The cost of an induction motor will increase as

A) Horsepower rating increases but r.p.m. decreases B) Horsepower rating decreases but r.p.m. increases C) Horsepower rating and operating speed increases D) Horsepower rating and operating speed decreases

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Answer & Solution

Answer: Option A

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

Which of the following alternatives will be cheaper?

A) A 100 H.P. AC. three phase motor B) Four motors of 25 H.P. each C) Five motors of 20 H.P. each D) Ten motors of 10 H.P. each

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Answer & Solution

Answer: Option A

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

Which of the following motors always starts on load?

A) Conveyor motor B) Floor mill motor C) Fan motor D) All of the above

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Answer & Solution

Answer: Option D

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

For a particular application the type of electric and control gear are determined by which of the following considerations?

A) Starting torque B) Conditions of environment C) Limitation on starting current D) All of the above

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Answer & Solution

Answer: Option D

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

The size of an excavator is usually expressed in terms of

A) "Crowd" motion B) Angle of swing C) Cubic meters D) Travel in meters

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Answer & Solution

Answer: Option C

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

The capacity of a crane is expressed in terms of

A) Type of drive B) Span C) Tonnes D) Any of the above

Discuss

Answer & Solution

Answer: Option C

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

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Industrial Drivers MCQ Questions & Answers | Electrical Engineering