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Power Electronics

Power Electronics
The latching current of SCR is 20 mA. Its holding current will be

  10 mA.
 40 mA.
 23 mA.
 60 mA.

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Power Electronics
Which semiconductor device acts like a diode and two transistor?

 Diac.
 UJT.
  Triac.
 SCR.

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Power Electronics
What happen due to high di / dt?

 None of these.
  Local hot spot.
 Breakdown of junction.
 Insulation failure.

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Power Electronics
A Triac has three terminals viz ___________

Cathode, anode, gate
Drain, source, gate
None of these
Two main terminal and a gate terminal

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Power Electronics
Anode current in an SCR consists of

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

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Power Electronics
COOLMOS device can be used in application up to power range of

 500 VA.
 100 KVA.
 1 KVA.
  2 KVA.

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