Power Electronics MCQs | Page - 4

Dear candidates you will find MCQ questions of Power Electronics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 100.69K Points
Coach

Q. In a 3 phase bridge rectifier the ripple frequency is

  • (A) Equal to the input frequency
  • (B) Twice the input frequency
  • (C) Three times the input frequency
  • (D) Six times the input frequency
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M

Mr. Dubey • 100.69K Points
Coach

Q. As the breakdown voltage reached, the DIAC exhibits

  • (A) Negative resistance characteristics
  • (B) Goes into avalanche condition
  • (C) Voltage drop snaps back
  • (D) All of these
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M

Mr. Dubey • 100.69K Points
Coach

Q. In BJT, the forward biased base emitter junction inject holes from base to emitter, the holes

  • (A) Do not contribute to the collector current
  • (B) Result in net current flow component into the base
  • (C) Contribute to the collector current
  • (D) Only (a) and (b)
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Mr. Dubey • 100.69K Points
Coach

Q. In BJT, switching losses occurs

  • (A) Only at turn - on
  • (B) Only at turn - off
  • (C) Both at turn on and off
  • (D) None of these
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M

Mr. Dubey • 100.69K Points
Coach

Q. Choppers is a

  • (A) AC - DC converters
  • (B) AC - AC converters
  • (C) DC - AC converters
  • (D) DC - DC converters
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M

Mr. Dubey • 100.69K Points
Coach

Q. The average value of the output voltage in a step - down dc chopper is given by

  • (A) V 0 = V s
  • (B) V 0 = D V s
  • (C) V 0 = V s / D
  • (D) V 0 = V s / ( 1 - D )
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