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Power Electronics

Power Electronics
Which of following is not a power transistor?

 IGBTs.
  TRIAC.
 SITS.
 COOLMOS.

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Power Electronics
If a latching current for the circuit shown in figure is 2 mA. Obtain the value of minimum width of the property turn ON the SCR?

 3 µs.
  3.3 µs
 3.2 µs
 3.1 µs

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Power Electronics
Anode current in an SCR consists of

  either electron or holes.
  electrons only.
  holes only.
  Both electron and holes.

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Power Electronics
In a UJT, the p-type emitter is ___________ doped

Lightly
None of these
Heavily
Moderately

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Power Electronics
Which statement is true for latching current ?

 It is related to conduction process of device.
  It is related to turn on process of the device.
 Both C and D.
 It is related to turn off process of the device.

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Power Electronics
During reverse recovery time

 charge carrier of junction J1 is swept out.
 charge carrier of junction J2 recombined.
  both B and C.
 charge carrier of junction J3 is swept out.

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