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Power Electronics

Power Electronics
Thyristor can be protected from over voltages by using

 fuse.
 snubber circuit.
 heat sink.
  voltage clamping device.

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Power Electronics
Which of the following is used in SCR to protect from high dV / dt?

 Equalizing circuit.
 Circuit breaker.
  Snubber circuit.
 Fuse.

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Power Electronics
A modern power semiconductor device that combines the characteristic of BJT and MOSFET is

 GTO.
 MCT.
 FCT.
  IGBT.

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Power Electronics
An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be

 4242.64 A.
 1500 A.
 6000 A.
 2121.32 A.

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Power Electronics
Which of following is not a power transistor?

 SITS.
  TRIAC.
 IGBTs.
 COOLMOS.

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Power Electronics
A diac is ___________ switch

None of these
An c.
A d.c.
A mechanical

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