Answered: jlQ Load 30 KW 0.8 lagging pf.…

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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Question

From the Single Line Diagram below, the 3-phase generator in Y-connection supplies electrical power to
a 3-phase load of 30 KW, PF 0.8 lagging via transmission line with reactance 1j Ω/phase. At node 2, the
capacitor C2 will be inserted to improve power factor to be 0.9 lagging.

1. Draw equivalent circuit of this power system.

2. Determine single phase voltage and current in the system before and after PF correction.

3. Calculate 3-phase power delivered to the load.

jl Q
2
Load
30 KW
0.8 lagging pf.
Capacitors C:
400 Vens line to line
50 Hz.

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