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In the circuit given below, the value of ZL for maximum power to be transferred is _____________

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+2 votes
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in Signals and Systems by (1.2m points)
In the circuit given below, the value of ZL for maximum power to be transferred is _____________

(a) R

(b) R + jωL

(c) R – jωL

(d) jωL

This question was addressed to me in an online interview.

I would like to ask this question from Properties of ROC topic in chapter Laplace Transform and System Design of Signals and Systems

1 Answer

+1 vote
by (42.1k points)
Correct answer is (c) R – jωL

Easiest explanation: The value of load for maximum power transfer is given by the complex conjugate of ZAB

ZAB = R + jXL

= R + jωL

∴ ZL for maximum power transfer is given by ZL = R – jωL.

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