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Power Electronics

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

 BJT.
  Power dioed.
 MOSFET.
 None of above.

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Power Electronics
In a P1N1P2N2 thyristor which layer is less doped ?

 P2.
 N2.
 P1.
  N1.

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Power Electronics
A power MOSFET has three terminals called

 Collector, emitter and base.
 Collector, emitter and gate.
  Drain, source and gate.
 Drain, source and base.

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

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

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Power Electronics
Under over voltage condition impedance offered by the voltage clamping device is

 infinity.
  low.
 high.
 moderate.

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Power Electronics
To turn on UJT, the forward bias on the emitter diode should be ___________ the peak point voltage.

Less than
Equal to
None of these
More than

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