1.

A 3-bus power system is shown in the figure below, where the diagonal elements of Y-bus matrix are: Y11 = -j12 pu, Y22 = -j15 pu and Y33 = -j7 pu.The per unit values of the line reactances p, q and r shown in the figure are

A. p = -0.2, q = -0.1, r = -0.5
B. p = 0.2, q = 0.1, r = 0.5
C. p = -5, q = -10, r = -2
D. p = 5, q = 10, r = 2
Answer» C. p = -5, q = -10, r = -2


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