1. A 500-V rms, 60-Hz feeder line supplies an industrial plant consisting of a motor drawing 70 kW at 0.65 pf (lagging), a capacitor with a rating of 5 KVAR, and lighting drawing 10 kW. S00 V rms 60 Hz (a) Calculate the total real power P, , total reactive power Qr, and total apparent power ISp| absorbed by the plant. Include units. Motor Capacitor Lighting (b) Determine the overall power factor. Specify leading or lagging. (c) What is the value of the additional capacitor you would need to connect in parallel to the load to achieve a power factor of 1?

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.30MCQ: Under balanced operating conditions, consider the three-phase complex power delivered by the...
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1. A 500-V rms, 60-Hz feeder line supplies an industrial plant
consisting of a motor drawing 70 kW at 0.65 pf (lagging), a capacitor with a
rating of 5 KVAR, and lighting drawing 10 kW.
S00 V rms
60 Hz
(a) Calculate the total real power P, , total reactive power Qr, and
total apparent power ISp| absorbed by the plant. Include units.
Motor Capacitor Lighting
(b) Determine the overall power factor. Specify leading or lagging.
(c) What is the value of the additional capacitor you would need to connect in parallel to the load to
achieve a power factor of 1?
(d) What is the value of the additional capacitor you would need to connect in parallel to the load
to achieve a power factor of 0.97 leading?
Transcribed Image Text:1. A 500-V rms, 60-Hz feeder line supplies an industrial plant consisting of a motor drawing 70 kW at 0.65 pf (lagging), a capacitor with a rating of 5 KVAR, and lighting drawing 10 kW. S00 V rms 60 Hz (a) Calculate the total real power P, , total reactive power Qr, and total apparent power ISp| absorbed by the plant. Include units. Motor Capacitor Lighting (b) Determine the overall power factor. Specify leading or lagging. (c) What is the value of the additional capacitor you would need to connect in parallel to the load to achieve a power factor of 1? (d) What is the value of the additional capacitor you would need to connect in parallel to the load to achieve a power factor of 0.97 leading?
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