Three loads are connected in parallel to a 220/0°Vrms ac source. Load 1 absorbs 80kVars at 0.85 pf lagging, load 2 absorbs 90kW and 50kVAR leading and load 3 absorbs 100kW at pf =1. a) Find the equivalent impedance. b) Find the overall power factor. c) Calculate the total real, reactive and apparent power.

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 2.7P: Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor,...
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Three loads are connected in parallel to a 220/0°Vrms ac source. Load 1
absorbs 80kVars at 0.85 pf lagging, load 2 absorbs 90kW and 50kVAR
leading and load 3 absorbs 100kW at pf =1.
a) Find the equivalent impedance.
b) Find the overall power factor.
c) Calculate the total real, reactive and apparent power.
d) Determine the value of capacitance required to improve the
power factor to unity.
e.) the current drawn from the supply under the new power factor
conditions.
Transcribed Image Text:Three loads are connected in parallel to a 220/0°Vrms ac source. Load 1 absorbs 80kVars at 0.85 pf lagging, load 2 absorbs 90kW and 50kVAR leading and load 3 absorbs 100kW at pf =1. a) Find the equivalent impedance. b) Find the overall power factor. c) Calculate the total real, reactive and apparent power. d) Determine the value of capacitance required to improve the power factor to unity. e.) the current drawn from the supply under the new power factor conditions.
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