E7C04 — Amateur Extra Class

E7C04 : How does an impedance-matching circuit transform a complex impedance to a resistive impedance?
A It introduces negative resistance to cancel the resistive part of impedance
B It introduces transconductance to cancel the reactive part of impedance
C It cancels the reactive part of the impedance and changes the resistive part to the desired value
D Reactive currents are dissipated in matched resistances
Correct Answer: It cancels the reactive part of the impedance and changes the resistive part to the desired value