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Power Electronics

Power Electronics
Which of the following is used in heat sink?

  Aluminium.
 Silver.
 Carbon.
 Iron.

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Power Electronics
A triac has ___________ semiconductor layers.

Three
Two
Four
Five

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

 Equalizing circuit.
 Fuse.
  Snubber circuit.
 Circuit breaker.

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Power Electronics
If holding current of a thyristor is 2 mA then latching current should be

  0.004 A.
 0.009 A.
 0.002 A.
 0.01 A.

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Power Electronics
Which of following devices has highest di/dt and dv/dt capability?

 SCR.
 SITH.
  GTO.
 SIT.

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Power Electronics
During which time maximum conduction spreading take place in the thyristor during turn ON?

  Spread time.
 Delay time.
 Same for every case.
 Rise time.

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