The ohmmeter has a full scale deflection current and meter movement resistance of 150UA and 2ka and has 2V supply. The open circuit voltage is 20v. The ohmmeter is zeroed, and then an unknown resistance is measured and produces a quarter scale deflection current. What is the unknown resistance?

The ohmmeter has a full scale deflection current and meter movement resistance of 150UA and 2ka and has 2V supply. The open circuit voltage is 20v. The ohmmeter is zeroed, and then an unknown resistance is measured and produces a quarter scale deflection current. What is the unknown resistance?

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

Z parameter

The Z-parameters that are the impedance parameters of a two-port network are defined by expressing the two-port voltages V1 and V2 in terms of two-port currents I1 and I2. The Z-parameters are calculated by open circuiting one of the two ports at a time henceforth they are called open-circuit impedance parameters.

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zhelpz

2. The ohmmeter has a full scale
deflection current and meter
movement resistance of 150uA and
2kn and has 2V supply. The open
circuit voltage is 20V. The ohmmeter
is zeroed, and then an unknown
resistance is measured and produces
a quarter scale deflection current.
What is the unknown resistance?

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