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Electrical Machine Design MCQ Questions & Answers | Electrical Engineering

Learn Electrical Machine Design MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Electrical Machine Design MCQ question is the important chapter for a Electrical Engineering and GATE students. Page-3 section-1

Each section contains 100 MCQs on Electrical Machine Design .
21
In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be
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Answer & Solution
Answer: Option B
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22
Wattmeter cannot be designed on the principle of
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Answer: Option C
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23
To measure a resistance with the help of a potentiometer it is
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Answer: Option B
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24
A Weston synchronoscope is a
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Answer: Option C
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25
The density of hydrogen is _____ times the density of air.
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Answer: Option A
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26
In D.C. machines the width of the duct is usually
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Answer: Option D
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27
The efficiency of a machine should be as ______ as possible to reduce the operating cost.
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Answer: Option A
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28
Which of the following methods is used for air cooling of turbo-alternators ?
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Answer: Option D
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29
In a Weston frequency meter, the magnetic axes of the two fixed coils are
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Answer: Option B
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30
A practical formula for determining the thickness of insulation between low voltage and high voltage windings is
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Answer: Option D
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