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Compute the complex power S (in polar form) drawn by a certain load if it is known that (a) it draws 100 W average power at a lagging PF of 0.75; (b) it draws a current I = 9+ j5 A rms when connected to the voltage 120/32° V rms; (c) it draws 1000 W average power and 10 VAR reactive power at a leading PF; (d) it draws an apparent power of 450 W at a lagging PF of 0.65.

Compute the complex power S (in polar form) drawn by a certain load if it is known that (a) it draws 100 W average power at a lagging PF of 0.75; (b) it draws a current I = 9+ j5 A rms when connected to the voltage 120/32° V rms; (c) it draws 1000 W average power and 10 VAR reactive power at a leading PF; (d) it draws an apparent power of 450 W at a lagging PF of 0.65.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Compute the complex power S (in polar form) drawn by a certain load if it is known that (a) it draws 100 W average power at a lagging PF of 0.75; (b) it draws a current I = 9+ j5 A rms when connected to the voltage 120/32° V rms; (c) it draws 1000 W average power and 10 VAR reactive power at a leading PF; (d) it draws an apparent power of 450 W at a lagging PF of 0.65.
Transcribed Image Text:Compute the complex power S (in polar form) drawn by a certain load if it is known that (a) it draws 100 W average power at a lagging PF of 0.75; (b) it draws a current I = 9+ j5 A rms when connected to the voltage 120/32° V rms; (c) it draws 1000 W average power and 10 VAR reactive power at a leading PF; (d) it draws an apparent power of 450 W at a lagging PF of 0.65.
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