Question

Calculate the value of Crest factor if Vpeak=12 V and Vr.m.s=24 V.

(a) .2

(b) .3

(c) .4

(d) .5

I have been asked this question at a job interview.

My question is taken from Solid State Controlled Drives topic in portion Introduction to Solid State Controlled Drives of Electric Drives

Answer 1

Right option is (d) .5

For explanation I would say: The value of the crest factor is Vpeak÷Vr.m.s=12÷24=.5. It signifies the peak value is .5 times than the r.m.s value.