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A symmetrical three-phase, three-wire 440V supply is connected to star-connected load. The impedances in each branch are ZR = (2+j3) Ω, ZY = (1-j2) Ω, ZB = (3+j4) Ω. Find ZRY. (a) (5.22-j0.82) Ω (b) (-3.02+j8) Ω (c) (3.8-j0.38) Ω (d) (-5.22+j0.82) Ω This question was addressed to me during an online interview. This interesting question is from Star to Delta and Delta to Star Transformation topic in section Polyphase Circuits of Network Theory Select the correct answer from above options network theory questions and answers, network theory questions pdf, network theory question bank, network theory gate questions and answers pdf, mcq on network theory pdf, gate network theory questions and solutions, network theory mcq Test , ies network theory questions, Network theory Questions for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)

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Correct option is (c) (3.8-j0.38) Ω Explanation: ZRY = (ZRZY + ZYZB + ZBZR)/ZB = (3.8-j0.38) Ω.

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