A symmetrical three-phase, three-wire 440V supply is connected to star – McqOptions

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1.	A symmetrical three-phase, three-wire 440V supply is connected to star-connected load. The impedances in each branch are Z_R = (2+j3) , Z_Y = (1-j2) , Z_B = (3+j4) . Find Z_BY.
A.	(-5.22+j0.82)
B.	(5.22-j0.82)
C.	(3.8-j0.38)
D.	(-3.02+j8)
Answer» C. (3.8-j0.38)

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