Q4: A 3 phase hadf-waye controlled Vectifier is operated from 3-phase, line to line voltage 230U, 50HZ Supply with load resistance R= 1o52.If the %3D average output voltage equal to 77.6V.Sketch the time Variation of the output voltage and load Current cand determine: a) The firing angle bj Auerage and rms volue of the load Curent. .

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