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Power Electronics

Power Electronics
If holding current of a thyristor is 2 mA then latching current should be

 0.01 A.
 0.002 A.
 0.009 A.
  0.004 A.

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Power Electronics
ON state voltage drop across SCR lie between the range

 1.5 - 2 V.
 0 - 0.5 V.
  1 - 1.5 V.
 0.5 - 1 V.

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Power Electronics
Light triggering mainly used in

 medium voltage direct current transmission.
  all of these.
  high voltage direct current transmission.
 low - voltage direct current transmission.

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Power Electronics
A power MOSFET has three terminals called

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

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Power Electronics
A diac has ___________ pn junctions

None of these
Two
Three
Four

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Power Electronics
By which one of the following we can measure the reliability of a string?

 Factor of safety.
 Reliability factor.
  Derating factor.
 String efficient.

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