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Question

A single-phase semiconverter is connected to 400 V, 50 Hz source. The converter is feeding a load of R= 50 Ω in series with large inductor which makes the load current ripple free. If the value of firing angle is 30°, then current distortion factor will be _____________.

  1. 0.953

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Solution

The correct option is A 0.953
For semiconverter, the current distortion factor

CDF=22cos(α/2)π(πα)=22cos(30/2)π(ππ6)
=2.7328.2246=2.7322.8678=0.953

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