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In an inverter, if the fundamental output frequency is 50 Hz, then the frequency of the lowest order harmonic will be

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in Power Electronics by (27.1k points)
In an inverter, if the fundamental output frequency is 50 Hz, then the frequency of the lowest order harmonic will be

(a) 50 Hz

(b) 150 Hz

(c) 250 Hz

(d) 350 Hz

The question was asked in an interview for job.

This intriguing question comes from PWM Inverters-4 in chapter Inverters of Power Electronics

1 Answer

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by (45.1k points)
The correct choice is (b) 150 Hz

For explanation: The 3rd harmonic is the lowest order harmonic,

Hence, 50 x 3 = 150 Hz.

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