1) A 240V/60Hz single-phase voltage source supplies 2 loads in parallel. The first draws 6 kW and 4 kVAr while the second consists of an RC load (3 2 and 3mF). a. Compute the values of the basic elements of load #1. b. Calculate the active power and power factor of load #2. c. Compute the power factor seen by the source, stating if it is leading or lagging.

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 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...
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1) A 240V / 60Hz single-phase voltage source supplies 2 loads in parallel. The first draws 6 kW
and 4 kVAr while the second consists of an RC load (3 2 and 3mF).
a. Compute the values of the basic elements of load #1.
b. Calculate the active power and power factor of load #2.
c. Compute the power factor seen by the source, stating if it is leading or lagging.
d. Draw the phasor diagram of the system, showing the source voltage and current as well
as the currents of the 2 loads. Use the source voltage as reference phasor.
e. Provide expressions for the instantaneous values of the source voltage and current as
well as the currents of the 2 loads
f. Sketch the waveforms (time domain) of the source voltage as well as the currents in
both loads.
Transcribed Image Text:1) A 240V / 60Hz single-phase voltage source supplies 2 loads in parallel. The first draws 6 kW and 4 kVAr while the second consists of an RC load (3 2 and 3mF). a. Compute the values of the basic elements of load #1. b. Calculate the active power and power factor of load #2. c. Compute the power factor seen by the source, stating if it is leading or lagging. d. Draw the phasor diagram of the system, showing the source voltage and current as well as the currents of the 2 loads. Use the source voltage as reference phasor. e. Provide expressions for the instantaneous values of the source voltage and current as well as the currents of the 2 loads f. Sketch the waveforms (time domain) of the source voltage as well as the currents in both loads.
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