in Education by
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 ZBR. (a) (5.22-j0.82) Ω (b) (-3.02+j8) Ω (c) (-5.22+j0.82) Ω (d) (3.8-j0.38) Ω I had been asked this question in a job interview. My question is based upon Star to Delta and Delta to Star Transformation topic in chapter 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)

1 Answer

0 votes
by
Right option is (b) (-3.02+j8) Ω The explanation: ZBR = (ZRZY + ZYZB + ZBZR)/ZY = (-3.02+j8) Ω.

Related questions

0 votes
    If the resistors of star connected system are ZR, ZY, ZB then the impedance ZBR in delta connected system will be ... GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)...
asked Oct 17, 2021 in Education by JackTerrance
0 votes
    A three-phase balanced delta connected load of (4+j8) Ω is connected across a 400V, 3 - Ø balanced supply. ... for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)...
asked Oct 17, 2021 in Education by JackTerrance
0 votes
    A symmetrical star connected system has VRN = 230∠0⁰. The phase sequence is RYB. Find VRY. (a) 398.37∠30⁰ (b) ... for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)...
asked Oct 17, 2021 in Education by JackTerrance
...