1.

If the resistors of star connected system are ZR, ZY, ZB then the impedance ZRY in delta connected system will be?

A. (Z<sub>R</sub>Z<sub>Y</sub>+ Z<sub>Y</sub>Z<sub>B</sub>+ Z<sub>B</sub>Z<sub>R</sub>)/Z<sub>B</sub>
B. (Z<sub>R</sub>Z<sub>Y</sub>+ Z<sub>Y</sub>Z<sub>B</sub>+ Z<sub>B</sub>Z<sub>R</sub>)/Z<sub>Y</sub>
C. (Z<sub>R</sub>Z<sub>Y</sub>+ Z<sub>Y</sub>Z<sub>B</sub>+ Z<sub>B</sub>Z<sub>R</sub>)/Z<sub>R</sub>
D. (Z<sub>R</sub>Z<sub>Y</sub>+ Z<sub>Y</sub>Z<sub>B</sub>+ Z<sub>B</sub>Z<sub>R</sub>)/(Z<sub>R</sub>+Z<sub>Y</sub> )
Answer» B. (Z<sub>R</sub>Z<sub>Y</sub>+ Z<sub>Y</sub>Z<sub>B</sub>+ Z<sub>B</sub>Z<sub>R</sub>)/Z<sub>Y</sub>


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