Q) calculde the measured resistance fora Kelvin bridge P=p- 1>K2R=r=3.673 K2, and S=0•01S2whenbalanced.Detennine the accuracyofifresistors I Pop,Ror) have ant 0.05% and the accuracymeasurmentof the Keluin bridgeprecisionaccuracyof sofisto.1%.

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Q) calculate the measured resistance for a Kelvin bridge P=p= 1) KZ g' R=r=3.673 K2, and S=0•01S2when balanced.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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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

Q) calculde the measured resistance for
a Kelvin bridge P=p- 1>K2
R=r=3.673 K2, and S=0•01S2when
balanced.
Detennine the accuracy
of
if
resistors I Pop,Ror) have an
t 0.05% and the accuracy
measurment
of the Keluin bridge
precision
accuracy
of s
of
is
to.1%.

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