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1. |
If the Δ impedances are Za, Zb and Zc and the Y impedances are Z1, Z2 and Z3, then which one of the following relations is correct? |
A. | Z1 = ZaZbZc |
B. | \({Z_1} = \frac{1}{{{Z_a} + {Z_b} + {Z_c}}}\) |
C. | Z1 = Za + Zb + Zc |
D. | \({Z_1} = \frac{{{Z_b}{Z_c}}}{{{Z_a} + {Z_b}+{Z_c}}}\) |
Answer» E. | |