An unbalanced star connected load is connected across a

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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use 4 decimal places for the final answer
An unbalanced star connected load is connected across a
3-phase, 440V, 50Hz supply. Phase A has a resistance of 5 ohms
and inductance of 6 mH, Phase B has a resistance of 7 ohms and
inductance of 8 mH and Phase C has a resistance of 9 ohms and
capacitance of 10 microFarad. Solve using wye-delta
transformation.
a.)Find ZA, ZB and ZC in polar form.
b.)Find ZAB, ZBC and ZCA in polar form.
c.)Find IAB, IBC and ICA
I
d.)Find the three line currents.
e.)Find the power in each phase.
Transcribed Image Text:An unbalanced star connected load is connected across a 3-phase, 440V, 50Hz supply. Phase A has a resistance of 5 ohms and inductance of 6 mH, Phase B has a resistance of 7 ohms and inductance of 8 mH and Phase C has a resistance of 9 ohms and capacitance of 10 microFarad. Solve using wye-delta transformation. a.)Find ZA, ZB and ZC in polar form. b.)Find ZAB, ZBC and ZCA in polar form. c.)Find IAB, IBC and ICA I d.)Find the three line currents. e.)Find the power in each phase.
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