Page 198 - Basic Electrical Engineering
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when R  = R ,
                              L
                         i





               This shows that for maximum power transfer conditions, the power transfer

               efficiency is 50 per cent only.
                  The maximum power transferred from the source to the load and also the

               power transfer efficiency are important in practical applications. If we change
               R , the value of power transferred and the transmission efficiency will
                 L
               change.


               Example 2.34    Calculate the value of load resistance, R  for which
                                                                                    L
               maximum power will be transferred from the source to the load in the
               following circuit.






















                                                         Figure 2.110


               Solution:
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