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Power Electronics

Power Electronics
Which of following is not a power transistor?

 COOLMOS.
 SITS.
 IGBTs.
  TRIAC.

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Power Electronics
A diac is simply ___________.

A three junction device
A single junction device
None of these
A triac without gate terminal

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Power Electronics
By which one of the following we can measure the reliability of a string?

 Factor of safety.
  Derating factor.
 Reliability factor.
 String efficient.

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Power Electronics
When the temperature increases, the inter-base resistance (RBB) of a UJT ___________.

Decreases
Remains the same
Increases
None of these

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Power Electronics
Compared to transistor, ______________ have lower on state conduction losses and higher power handling capability

 Semi conductor diodes.
 TRIACs.
 MOSFETs.
  Thyristor.

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Power Electronics
What may happen high dV / dt?

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

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