Power Electronics
Gate circuit or triggering circuit of a thyristor is

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

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Power Electronics
Rise time is defined by the interval when

 anode voltage drops from 90 % to 10 % of its initial value.
 gate current rises from 90 % to 100 % of it final value.
  both B and C.
 anode current rises 10 % to 90 % of its final value.

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Power Electronics
In forward blocking mode of a thyristor

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

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