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POWER ELECTRONICS

Power Electronics
For series connected SCR’s dynamic equalising circuit consists of

 R and C in series but with diode across C.
 series R and diode with C across R.
  R and C in series but with diode across R.
 series R and diode with C across R.

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Power Electronics
Anode current in an SCR consists of

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

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Power Electronics
Dynamic equalising circuit is useful

 to limit dV / dt of SCR.
 to limit di / dt of SCR.
 for voltage equalisation.
  both B and C.

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Power Electronics
Which following is a two terminal three layer device?

 None of above.
 BJT.
  Power dioed.
 MOSFET.

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Power Electronics
Which of following is not a power transistor?

 COOLMOS.
  TRIAC.
 IGBTs.
 SITS.

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