GATE ECE 2007 | Question: 7

Question

An independent voltage source in series with an impedance $\mathbf{Z}_{\mathrm{s}}=R_{\mathrm{s}}+j X_{\mathrm{s}}$ delivers a maximum average power to a load impedance $\mathbf{Z}_{\mathrm{L}}$ when

• A. $\mathbf{Z}_{\mathrm{L}}=R_{\mathrm{S}}+j X_s$
• B. $\mathbf{Z}_{\mathrm{L}}=R_{\mathrm{S}}$
• C. $\mathbf{Z}_{\mathrm{L}}=j X_s$
• D. $\mathbf{Z}_{\mathrm{L}}=R_{\mathrm{S}}-j X_s$