Multiple choice

An independent voltage source in series with an impedance ZS = RS + jXS delivers a maximum average power to a load impedance ZL when

  1. ZL = RS + jXS

  2. ZL = RS

  3. ZL = jXS

  4. ZL = RS - jXS

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

According to maximum $Z_L = Z_B^* = (R_B - jX_B)$