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Power Electronics

Power Electronics
The latching current of GTO should be of order

  500 mA.
 2 A.
 1 A.
 100 mA.

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Power Electronics
Spread time is defined as the interval during which

  anode current rises from 90 % to its final value.
 anode current rises from 10 % to 90 % of its final value.
 both (A) and (B).
 anode voltage drops from 10 % of its initial value to zero.

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Power Electronics
A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is

  0.27.
  0.67.
  0.32.
  0.45.

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

 Carbon.
  Aluminium.
 Silver.
 Iron.

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Power Electronics
Power transistor are type of

 MOSFETs.
  All of above.
 IGBTs.
 BJTs.

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Power Electronics
COOLMOS device can be used in application up to power range of

  2 KVA.
 100 KVA.
 500 VA.
 1 KVA.

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