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

If the resistors of star connected system are ZR, ZY, ZB then the imp

1.	If the resistors of star connected system are ZR, ZY, ZB then the impedance ZRY in delta connected system will be?
A.	(ZRZY + ZYZB + ZBZR)/ZB
B.	(ZRZY + ZYZB + ZBZR)/ZY
C.	(ZRZY + ZYZB + ZBZR)/ZR
D.	(ZRZY + ZYZB + ZBZR)/(ZR+ZY)
Answer» B. (ZRZY + ZYZB + ZBZR)/ZY

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

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