Which of the following is the primary benefit of impedance matching?

a) maximum transfer of energy
b) maximum resistive load
c) same time constant

A) maximum transfer of energy

Explanation:

Whenever a source of power with a fixed output impedance such as an electric signal source, a radio transmitter or a mechanical sound  operates into a load, the maximum possible power is delivered to the load when the impedance of the load (load impedance or input impedance) is equal to the complex conjugate of the impedance of the source (that is, its internal impedance or output impedance). For two impedances to be complex conjugates their resistances must be equal, and their reactances must be equal in magnitude but of opposite signs.

For maximum transfer of energy following condition called impedance matching must be satisfied.

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