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Calculate the value of Crest factor if Vpeak=798 V and Vr.m.s=489 V.

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Calculate the value of Crest factor if Vpeak=798 V and Vr.m.s=489 V.

(a) 1.63

(b) 1.54

(c) 1.59

(d) 1.26

This question was posed to me by my school principal while I was bunking the class.

My query is from Solid State Controlled Drives in portion Introduction to Solid State Controlled Drives of Electric Drives

1 Answer

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The correct answer is (a) 1.63

The explanation is: The value of the crest factor is Vpeak÷Vr.m.s=798÷489=1.63 V. It signifies the peak value is 1.63 times than the r.m.s value.

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