 
			 
			MCQOPTIONS
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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. | |