A balanced three-phase distribution line has an impedance of 5 + j10 N/4. This line is used to sup- ply three balanced three-phase loads that are con- nected in parallel. The three loads are L = 180 kVA at 0.866 pf lag, L2 = 150 kVA at 0.28 pf lead, and L3 = 72.12 kW at unity pf. The magnitude of the line voltage at the terminals of the loads is 1800 V3 V. a) What is the magnitude of the line voltage at the sending end of the line? b) What is the percent efficiency of the distribution line with respect to average power?

A balanced three-phase distribution line has an impedance of 5 + j10 N/4. This line is used to sup- ply three balanced three-phase loads that are con- nected in parallel. The three loads are L = 180 kVA at 0.866 pf lag, L2 = 150 kVA at 0.28 pf lead, and L3 = 72.12 kW at unity pf. The magnitude of the line voltage at the terminals of the loads is 1800 V3 V. a) What is the magnitude of the line voltage at the sending end of the line? b) What is the percent efficiency of the distribution line with respect to average power?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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