Power Electronics
Delay time is defined by the interval when

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

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Power Electronics
Dynamic equalizing circuit is used for

  equal division of voltage across each thyristor.
 equal division of current through each thyristor in parallel.
 equal division of voltage across each thyristor in parallel.
 equal division of current through each thyristor in series.

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Power Electronics
In reverse blocking mode of a thyristor

 junction J3 is in forward bias and J1, J2 in reverse bias.
 junction J2 is in reverse bias and J1, J3 is in forward bias.
 junction J1 and J2 is in forward bias and J3 is in reverse bias.
  junction J1, J3 is in reverse bias and J2 is in forward bias.

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