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Power Electronics

Power Electronics
If the anode current is 800 A, then the amount of current required to turn off the GTO is about

  200 A.
 400 A.
 600 A.
 20 A.

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Power Electronics
Leakage current flows through the thyristor in

  both forward and reverse blocking mode.
 forward blocking mode.
 reverse blocking mode.
 forward conduction mode.

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

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

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Power Electronics
Thermal voltage VT can be given by

  Kq/T.
 (K2/q)(T + 1/T - 1).
 qT/K.
 KT/q.

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

 BJT.
 None of above.
 MOSFET.
  Power dioed.

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Power Electronics
The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is

  135 μs.
 130 μs.
 140 μs.
 145 μs.

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