Question

A single-phase half wave rectifier with a FD is supplied by Vs = 240 V, AC with a load R = 10 Ω, L = 0.5 mH and a firing angle α = 30°. Find the average value of the load voltage.

(a) 50 V

(b) 100 V

(c) 150 V

(d) 200 V

The question was asked during an interview for a job.

This interesting question is from Single-Phase HW AC-DC-3 topic in portion Converters of Power Electronics

Answer 1

Right option is (b) 100 V

The best I can explain: Vo = (Vm/2π) x (1+cosα)

Vm = √2Vs.