Consider the three-mesh circuit shown in Fig. 5.3-1. Mesh analysis reveals that the mesh
currents are 1 A, 2 A and 3 A as shown in the figure. Two nodes aand ahave been identified
in the circuit and the current crossing the node a from left to right is marked as 2 A. The
voltage of awith respect to a is calculated to be 1 V and is marked in the figure.
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5.3SUBSTITUTION THEOREM
In Fig. 5.2-7, the circuits (b) and (d) show the circuits (a) and (c) respectively,
after star-delta transformation on the inner star-connected resistors of 1 Ω, 0.6 Ωand
1.5 Ω. Taking positive direction of current flow to be from left to right ...
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