Question

The form factor of sinusoidal alternating electric current is ___________

(a) 0

(b) 1

(c) 1.11

(d) 1.15

The question was posed to me during an online interview.

My question is taken from Advanced Problems on Millman’s Theorem and Maximum Power Transfer Theorem topic in division Useful Theorems in Circuit Analysis of Network Theory

Answer 1

Correct answer is (c) 1.11

Best explanation: We know that for alternating electric current form factor is defined as the ratio of rms value and average value of alternating current.

Now the rms value of alternating electric current = 0.07 × maximum value of alternating current.

Average value of alternating electric current = 0.637 × maximum value of alternating current.

∴ Form factor = \(\frac{0.707}{0.637}\) = 1.11.