The impedance of a circuit placed across a 120V, 50 Hz source is (10 +j20). Findthe power.O 175 wattO144 wattO200 wattO288 watt

Supply voltage V = 120 V.Frequency f = 50 Hz.Impedance

Answered: The impedance of a circuit placed…

The impedance of a circuit placed across a 120V, 50 Hz source is (10 +j20). Find the power. 175 watt O144 watt 200 watt O288 watt

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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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

The impedance of a circuit placed across a 120V, 50 Hz source is (10 +j20). Find
the power.
O 175 watt
O144 watt
O200 watt
O288 watt

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