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Power Electronics

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

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

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Power Electronics
Gate circuit or triggering circuit of a thyristor is

 may be low power or high power circuit.
  lower power circuit.
 magnetic circuit.
 high power circuit.

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Power Electronics
CB used for over current protection of thyristor operates when the fault current is

 both (A) and (B).
  of long period.
 of short duration.
 neither (A) nor (B).

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Power Electronics
SITH is also known as

 Silicon controlled rectifier.
 None of these.
  Filled controlled diode.
 Filled controlled rectifier.

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Power Electronics
What happen due to high di / dt?

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

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Power Electronics
The latching current of GTO should be of order

 1 A.
  500 mA.
 100 mA.
 2 A.

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