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Power Electronics

Power Electronics
4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is

 0.75.
 0.2.
  0.25.
 0.7.

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Power Electronics
ON state voltage drop across SCR lie between the range

  1 - 1.5 V.
 1.5 - 2 V.
 0.5 - 1 V.
 0 - 0.5 V.

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Power Electronics
A diac is ___________ switch

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

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Power Electronics
A diac has ___________ semiconductor layers

Three
None of these
Four
Two

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

 FCT.
 GTO.
 MCT.
  IGBT.

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Power Electronics
Maximum power loss occurs during

  rise time.
 spread time.
 delay time.
 all.

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