Question

In single-phase, RLE load, calculate the Peak inverse voltage using the data: (Vs)r.m.s = 9 V, f = 50 Hz,  E = 40 V.

(a) 52.2 V

(b) 52.7 V

(c) 59.7 V

(d) 52.9 V

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This interesting question is from Electrical Drive Systems and Components in division Electrical Drive Systems and Components of Electric Drives

Answer 1

Right answer is (b) 52.7 V

Explanation: In a single phase, RLE load the peak inverse voltage across the thyristor VT = Vm+E = 52.7 V.