Power Electronics MCQs Part 9

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Electrical Engineering MCQs – Power Electronics MCQ Questions Part 9

Leakage current flows through the thyristor in which mode

Leakage current flows through the thyristor in which mode

  1. Both forward and reverse blocking mode
  2. Forward blocking mode
  3. Reverse blocking mode
  4. None of above

Correct answer: 1. Both forward and reverse blocking mode

Which of below mentioned statement is correct

Which of below mentioned statement is correct

  1. SIT is a high power, high frequency device
  2. SIT is a high power, high voltage device
  3. SIT is a high power, low frequency device
  4. SIT is a low power, high frequency device

Correct answer: 1. SIT is a high power, high frequency device

The correct statement regarding charge carrier. During reverse recovery time

The correct statement regarding charge carrier. During reverse recovery time

  1. Charge carrier of junction J1 is swept out
  2. Charge carrier of junction J3 is swept out
  3. Both of above
  4. None of above

Correct answer: 3. Both of above

The major disadvantage of fast recovery diodes is

The major disadvantage of fast recovery diodes is

  1. Doping is carried out
  2. Its recovery time is only 5 µs
  3. Its recovery time is only 50 µs
  4. None of above

Correct answer: 1. Doping is carried out

Anode current in an SCR belongs to

Anode current in an SCR belongs to

  1. Electrons only
  2. Holes only
  3. Either electron or holes
  4. Both electron and holes

Correct answer: 2. Holes only

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