Question

In single phase RLE load, calculate the Peak inverse voltage using the data: (Vs)r.m.s=89 V, f=50 Hz,  E=440 V.

(a) 521.2 V

(b) 527.8 V

(c) 597 V

(d) 529 V

The question was posed to me during an interview.

I'd like to ask this question from Solid-State Switching Circuits topic in division Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right choice is (c) 597 V

Easy explanation: In a single phase, RLE load the peak inverse voltage across the thyristor VT=Vm+E=529 V.