Page 190 - Basic Electrical Engineering
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Figure 2.99




                                     2.8.5 Maximum Power Transfer Theorem

               Power is supplied from a source to a load. Figure 2.100 shows a generator

               with internal resistance, R  supplying power to a load resistance, R .
                                               i
                                                                                               L
               Maximum power transfer theorem tells us at what load (i.e., at what value of
               R ) maximum power will be transferred from the source to the load.
                 L
                  Let us arrive at the condition of maximum power transfer through the
               following calculations and thereafter state the related theorem.



               Current,



                                                                                                     2
               Let power consumed by or delivered to the load be P . Since power = I R,
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