Basic Engineering Circuit Analysis 11th Edition by David Irwin ,Robert Nelms

تمرين 90

Some young engineers at the local electrical utility are debating ways to lower operating costs. They know that if they can reduce losses, they can lower operating costs. The question is whether they should design for maximum power transfer or maximum efficiency, where efficiency is defined as the ratio of customer power to power generated. Use the model in Fig. P5.130 to analyze this issue and justify your conclusions. Assume that both the generated voltage and the customer load are constant.

Figure P5.130