Power Electronics
What happen due to high di / dt?

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

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Power Electronics
Delay time is defined by the interval when

 anode current reaches 10 % from forward leakage current.
 anode voltage drops from 100 % to 90 % of its actual value.
  all of these.
 gate current increases from 90 % to 100 % of its final value.

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Power Electronics
During gate recovery time

 charge carriers of J3 junction is removed.
 charge carriers of J2 junction is swept out.
 charge carrier of J1 junction removed.
  charge carriers of J2 junction recombined.

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