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Power Electronics

Power Electronics
The device that exhibits negative resistance region is ___________.

UJT
Transistor
Diac
Triac

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Power Electronics
What may happen high dV / dt?

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

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Power Electronics
IGBT combines the advantages of

 SITs and MOSFETs.
 None of these.
  BJTs and MOSFETs.
 BJTs and SITs.

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Power Electronics
Which of the following is disadvantage of fast recovery diodes?

  Doping is carried out.
 Recovery is only 5 µs.
 Recovery is only 50 µs.
 None of these.

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Power Electronics
The triac is ___________.

Not a thyristor
Like a bidirectional SCR
None of these
A four-terminal device

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

Increases
Remains the same
Decreases
None of these

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