Electrical Engineering ⇒ Topic : Reciprocity Theorem with d.c
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Samual
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Reciprocity Theorem In any linear bilateral network, if a single voltage source Va in branch 'a' produces a current lb in branch 'b', then if the voltage source Va is removed and inserted in branch 'b' will produce a current lb in branch 'a'. The ratio of response to excitation is same for the two conditions mentioned above. This is called the reciprocity theorem. Consider the network shown in Fig. (1). AA' denotes input terminals and BB' denotes output terminals. The application of voltage V across AA' produces current I at BB' . Now if the positions of the source and responses are interchanged, by connecting the voltage source across BB' , the resultant current I will be at terminals AA'. According to the reciprocity theorem, the ratio of response to excitation is the same in both cases.
figure (1)
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