Figure 1 shows an ac voltage source supplying power to a load with impedance Z = 202– 30°2. Calculatethe following:a. I supplied to the load.b. Power factor of this loadc. Real powerd. Reactive powere. Apparent powerf. Complex powerV = 12020° VZ 202- 30° N

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Engineering

Electrical Engineering

g: plied to the load. er factor of this load I power tive power arent power plex 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 2.22P: The real power delivered by a source to two impedances, Z1=4+j5 and Z2=10 connected in parallel, is...

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Concept explainers

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

Figure 1 shows an ac voltage source supplying power to a load with impedance Z = 202– 30°2. Calculate
the following:
a. I supplied to the load.
b. Power factor of this load
c. Real power
d. Reactive power
e. Apparent power
f. Complex power
V = 12020° V
Z 202- 30° N

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