Electrical Machine Design MCQ Questions & Answers

1

Dummy coil should not be used in

A) small machines B) large machines C) either (A) or (B) D) none of the above

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Answer & Solution

Answer: Option B

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2

Which of the following essential features is possessed by an indicating instrument ?

A) Deflecting device B) Controlling device C) Damping device D) All of the above

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Answer & Solution

Answer: Option D

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3

Multilayer helical windings are commonly used in the transformers as high voltage windings

A) upto 20 kV B) upto 50 kV C) upto 80 kV D) for 110 kV and above

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Answer & Solution

Answer: Option D

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4

Impose limitation on design.

A) Saturation B) Temperature rise C) Efficiency D) Power factor E) All above

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Answer & Solution

Answer: Option E

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5

The surge phenomenon is particularly important in case of

A) low voltage transformers B) medium voltage transformers C) high voltage transformers D) any of the above

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Answer & Solution

Answer: Option C

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6

Cylindrical windings using circular conductors, employed in transformers, are

A) single layered B) double layered C) multi-layered D) none of the above

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Answer & Solution

Answer: Option C

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7

The ratio of maximum displacement deviation to full scale deviation of the instrument is called

A) static sensitivity B) dynamic deviation C) linearity D) precision or accuracy

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Answer & Solution

Answer: Option C

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8

The pointer of an indicating instrument should be

A) very light B) very heavy C) either (A) or (B) D) neither (A) nor (B)

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Answer & Solution

Answer: Option A

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9

Electrical machines having a power output up to about 750 W may be called_______machines.

A) small size B) medium size C) large size D) any of the above

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Answer & Solution

Answer: Option A

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10

The heat dissipated by from a surface depends upon its temperature and its characteristics like colour, roughness etc.

A) conduction B) convection C) radiation D) any of the above

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Answer & Solution

Answer: Option C

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Electrical Machine Design MCQ Questions & Answers | Electrical Engineering