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Power Electronics MCQ Questions & Answers | ECE

Learn Power Electronics MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Power Electronics MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-4 section-1

Each section contains 100 MCQs on Power Electronics .
31
SMPS normally use Ferrite core transformers in place of Iron core because of
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Answer & Solution
Answer: Option B
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32
Which of the following devices does not have negative resistance characteristics
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Answer: Option D
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33
Inverters find applications in
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Answer: Option A
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34
A diac has . . . . . . . . terminals
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Answer: Option A
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35
In controlled rectifiers, the nature of load current is continuous or discontinuous
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Answer: Option B
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36
The operating state that distinguishes a silicon controlled rectifier (SCR) from a diode is
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Answer: Option B
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37
For a type A chopper, DC source voltage is 240 V. Calculate the average output voltage is the duty cycle is 0.4. Take a voltage drop of 4 V across the chopper when it is on.
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Answer: Option C
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38
If firing angle in an SCR circuit is increased, the output . . . . . . . .
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Answer: Option C
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39
In a thyristor, the minimum current required to maintain the device in the 'ON' state is called
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Answer: Option C
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40
For a single phase fully controlled converter bridge operating with continuous load current, the converter will operate in inverting mode for triggering angle, $$\alpha $$, such that:
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Answer: Option B
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