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Power Electronics

Power Electronics
A power semiconductor may undergo damage due to

  High di/dt.
 Low dv/dt.
 Low di/dt.
 High dv/dt.

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

 SIT.
 SCR.
  GTO.
 SITH.

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Power Electronics
Materials used in heat sink should have

 large surface area.
 high thermal conductivity.
  All of these.
 high melting point.

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Power Electronics
The device that does not have the gate terminal is ___________.

Triac
Diac
SCR
FET

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Power Electronics
When the temperature increases, the intrinsic stand off ratio ___________.

Decreases
Increases
Essentially remains the same
None of these

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Power Electronics
Maximum power loss occurs during

  rise time.
 delay time.
 spread time.
 all.

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