Principles and Applications of Electrical Engineering
6th Edition
ISBN: 9780073529592
Author: Giorgio Rizzoni Professor of Mechanical Engineering, James A. Kearns Dr.
Publisher: McGraw-Hill Education
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Chapter 7, Problem 7.71HP
A residential four-wire system supplies power at 240 V rms to the following single-phase appliances:On the first phase, there are ten 60-W bulbs. On the second phase, there is a 1-kW vacuum cleaner with apower factor of 0.9. On the third phase, there are ten23-W compact fluorescent lamps with a power factor of 0.61. Find:
a. The current in the netural wire.
b. The real, reactive, and apparent power for eachphase.
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