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Circuit Theorems in AC Analysis - Engineering

Q1:

In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.

A True

B False

ANS:A - True

Here: If ZL is the complex conj of Zo, then they are the same in "magnitude" only different in direction.

Just like in a transmission line:

If ZL = Zo, then the line is perfectly matched and all the input power has been absorbed by the load.