Question

The rms value of the sine wave is 100 A. Its peak value is ____________

(a) 70.7 A

(b) 141.4 A

(c) 150 A

(d) 282.8 A

I have been asked this question in a job interview.

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

Answer 1

The correct option is (b) 141.4 A

For explanation I would say: We know that for sinusoidal alternating electric current the peak factor or amplitude factor can be expressed the ratio of maximum or peak value and rms value of alternating current.

So the peak value = rms value of alternating electric current × peak factor of alternating electric current = 100 × 1.414 = 141.4 A.