Question

If ZS = RS+jXS, ZL=RL+jXL, then if RL is fixed, the condition for maximum power to be transferred is?

(a) XS=XL

(b) XS=-XL

(c) XS+XL=0

(d) None of the mentioned

This question was addressed to me by my school teacher while I was bunking the class.

My doubt is from Maximum Power Transfer Theorem topic in division Steady State AC Analysis of Network Theory

Answer 1

Right option is (b) XS=-XL

The explanation: If ZS = RS+jXS, ZL=RL+jXL, then if RL is fixed, the condition for maximum power to be transferred is XS=-XL.