Calculate resistance across DMM Tor the circuit shown in the figure, R1 445 k),R2 IMO, and V. 30 V. V is measured withvoltmeter (DMM) to be 20 V. Calculate theequivalent resistance of the DMM.R1KAHRABEVsR2DMM

Answered: Tor the circuit shown in the figure, R1…

Tor the circuit shown in the figure, R1 445 kO, R2 1MO, and V. 30 V. V is measured with voltmeter (DMM) to be 20 V. Calculate the equivalent resistance of the DMM. R1 KAHRABE TEA Vs R2 DMM

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.2P: The temperature dependence of resistance is also quantified by the relation R2=R1[ 1+(T2T1) ] where...

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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

Calculate resistance across DMM

Tor the circuit shown in the figure, R1 445 k),
R2 IMO, and V. 30 V. V is measured with
voltmeter (DMM) to be 20 V. Calculate the
equivalent resistance of the DMM.
R1
KAHRABE
Vs
R2
DMM

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