Power Electronics MCQ

Power electronics refers to the study of electronic switching for controlling the flow of electric power.

A cycloconverter converts

A cycloconverter converts:

  1. AC to DC
  2. DC to AC
  3. DC to DC with different level
  4. AC to AC at different frequencies

Correct answer: 4. AC to AC at different frequencies


The power diode is a

The power diode is a:

  1. One terminal device
  2. Two terminal device
  3. Three terminal device
  4. Four terminal device

Correct answer: 2. Two terminal device


Snubber circuits are employed to

Snubber circuits are employed to:

  1. Reduce the switching power losses
  2. Control the device dv/dt
  3. Avoid breakdowns
  4. All of these

Correct answer: 4. All of these


The Number of PN junctions on thyristor

The Number of PN junctions on thyristor:

  1. Two
  2. Three
  3. Four
  4. Five

Correct answer: 2. Three


An Inverter converts

An inverter converts:

  1. AC to DC
  2. DC to AC
  3. DC to DC with different level
  4. AC to AC at different frequencies

Correct answer: 2. DC to AC

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