Question

A single-phase bridge inverter has a square wave output voltage waveform, with odd harmonics present. What is the percentage of the fifth harmonic component to the fundamental component?

(a) 50 %

(b) 25 %

(c) 20 %

(d) 5 %

The question was asked by my school teacher while I was bunking the class.

My question is based upon PWM Inverters-5 in chapter Inverters of Power Electronics

Answer 1

Correct option is (c) 20 %

Explanation: For the fundamental comoponent, n = 1 and for the fifth harmonic n = 5

1/5  = 0.2 = 20 %.