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Power Electronics

Power Electronics
A triac is equivalent to two SCRs ___________.

In parallel
None of these
In inverse-parallel
In series

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Power Electronics
The latching current of GTO should be of order

 2 A.
 100 mA.
  500 mA.
 1 A.

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Power Electronics
What happen due to high di / dt?

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

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

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

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Power Electronics
When the temperature increases, the inter-base resistance (RBB) of a UJT ___________.

None of these
Increases
Remains the same
Decreases

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Power Electronics
Anode current in an SCR consists of

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

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