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If the source ZS is complex, then the condition for the maximum power to be transferred is?

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If the source ZS is complex, then the condition for the maximum power to be transferred is?

(a) ZL=ZS

(b) ZL=ZS*

(c) ZL=-ZS

(d) ZL=-ZS*

I have been asked this question during an online exam.

My enquiry is from Maximum Power Transfer Theorem in portion Steady State AC Analysis of Network Theory

1 Answer

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Correct option is (b) ZL=ZS*

The explanation is: If the source Zs is complex, then the condition for the maximum power to be transferred is ZL=ZS* that is load impedance is complex conjugate of source impedance.

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