Some young engineers at the local electrical utility are debating ways to lower operating costs....

Question

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 figure to analyze this issue and justify your conclusions. Assume that both the generated voltage and the customer load areconstant.

Robert · Accepted Answer

For maximum power transfer internal resistance must be equal to load resistance. 
Hence Rdel = Rload 
So the half of the energy generated dissipates in internal resistance. It means half of the energy loss 
occurs in internal resistance and hence efficiency of total system is 50 %.

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...

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