Power Electronics
A 200 A thyristor is to be operated in parallel with a 300 A thyristor. The ON state voltage drops are 1.5 V and 1.2 Volts. What is the value of resistance R to be connected in series with each thyristor, so that current through the combination is 500 A and each of them is fully loaded ?

 0.3 ohm
  0.3 ohm
 0.03 ohm
 3.0 ohm

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Power Electronics
Dynamic equalizing circuit is used for

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

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