A power transmission circuit with a source voltage of (mathbf{V}_{mathrm{S}}=880) (+j) o V can be modeled as

Question:

A power transmission circuit with a source voltage of $\mathbf{V}_{\mathrm{S}}=880$ $+j$ o V can be modeled as shown in Figure P8-73 .

(a) Find the average power produced by the source, lost in the wires, and delivered to the load.

(b) What is the transmission efficiency defined as $\eta=P_{\mathrm{L}} /$ $P_{\mathrm{S}}$ ?

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