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Discussion

In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then

  • A.average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A
  • B.both the average and rms thyristor currents will be less than 20 A
  • C.both the average and rms thyristor currents will be more than 20 A
  • D.rms thyristor current will be 20 A and average thyristor current will be 10 A

Answer: B

Each thyristor conducts for 50% of time.

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