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Power Electronics

Power Electronics
Which of following is not a power transistor?

 COOLMOS.
 IGBTs.
 SITS.
  TRIAC.

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Power Electronics
If the anode current is 800 A, then the amount of current required to turn off the GTO is about

  200 A.
 20 A.
 400 A.
 600 A.

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Power Electronics
A triac has ___________ semiconductor layers.

Three
Four
Five
Two

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Power Electronics
What may happen high dV / dt?

  Both A and B.
 Anyone of these.
 Unwanted turn ON.
 Breakdown of J2 junction.

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Power Electronics
Typical range of thyristor turn OFF time is

  3 - 100 µs.
 3 - 10 µs.
 3 - 50 µs.
 3 - 500 µs.

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Power Electronics
SCRs are used in series to meet

 high current demand.
  high voltage demand.
 low voltage demand.
 low current demand.

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