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Full form of VRF.

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Full form of VRF.

(a) Voltage ripple factor

(b) Voltage revert factor

(c) Volume ripple factor

(d) Volume revert factor

I had been asked this question during an online interview.

I would like to ask this question from Motors Rating and Heating in section Rating and Heating of Motors of Electric Drives

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Correct answer is (a) Voltage ripple factor

Best explanation: Voltage ripple factor measures the harmonics on the DC side of the converter. The value of voltage ripple factor is √F.F^2-1. The form factor is Vr.m.s÷Vavg.

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