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Question

A three phase three pulse, diode rectifier feeds R load of 10 Ω. If the rms value of input phase current is 22 A, then the average value of diode current is ______ A.
  1. 8.57

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Solution

The correct option is A 8.57
In multiphase diode rectifiers, average value of diode current is

ID=ImpπsinπP

where, P = number of pulses = 3

ID=222πsin(π3)=8.57A

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