Answered: DEGREE: ELECTRICAL ENGINEERING…

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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DEGREE: ELECTRICAL ENGINEERING
SUBJECT/COURSE: AC MACHINES

NOTE: Please solve in this way.
1. Please have a good handwriting, some of the answers are not readable. Thank you!
2. GIVEN. (Include symbols and units)
3. REQUIRED/FIND/MISSING (with symbol/s and units)
4. ILLUSTRATIONS such as diagrams and graphs are Required
5. Step-by-step SOLUTION with Formulas and Symbols. No Shortcut, no skipping, and detailed as possible
6. FINAL ANSWERS must be rounded up to two decimal places with corresponding unit.

PROBLEM:
A 6.6 kV, star-connected,3-phase, synchronous motor works at constant voltage and constant excitation. Its synchronous impedance is (2.0 + j 20) per phase. When the input is 1100 kW, its power factor is 0.8 leading. Find the power factor when the input is increased to 1800 kW.

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