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A 1-phase half wave diode rectifier with R load, has input voltage of 240 V. The input power factor is

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in Power Electronics by (27.1k points)
A 1-phase half wave diode rectifier with R load, has input voltage of 240 V. The input power factor is

(a) Unity

(b) 0.707 lag

(c) 0.56 lag

(d) 0.865 lag

I got this question in an online quiz.

This intriguing question comes from 1P-Diode Rectifier HW-2 in chapter Diode Rectifiers of Power Electronics

1 Answer

0 votes
by (45.1k points)
Correct option is (c) 0.56 lag

To explain I would say: Input p.f = V(rms)/Vs

Vrms is the RMS value of output voltage. Vrms = (√2 x 230)/2

Vs = 230

pf = 0.707.

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