Basic Engineering Circuit Analysis 11th Edition by David Irwin ,Robert Nelms

Exercise 82

An industrial load consumes 100 kW at 0.707 pf lagging. The 60-Hz line voltage at the load is 480 0° V rms. The transmission-line resistance between the power company transformer and the load is 0.1 . Determine the power savings that could be obtained if the pf is changed to 0.94 lagging.