Electrical Engineering ⇒ Topic : Admittance Triangle

Admittance Triangle

Since admittance has in-phase component (i.e. G) as well as quadrature component (i.e. B_L or B_c), it can be represented by a right angled triangle, called admittance triangle.

(i) For an inductive circuit (i.e. R + jX_L), the impedance and admittance triangles will be as shown in Fig. (a). Note that admittance angle is equal to the impedance angle but is *negative. For this reason, B_L will be along OY'-axis and hence negative.

                                                                       figure (a)

(ii) For a capacitive circuit (i.e. R - jX_C), the impedance and admittance triangles will be as shown in Fig.(B). Note that admittance angle is equal to the impedance angle but of opposite sign. For this reason, B_C will lie along °Y-axis and hence positive

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                                                                               FIGURE (B)