Two strain gauges are mounted so that they sense axial strain on a steel member in uniaxial tension. The 120 Ω gauges form two legs of a Wheatstone bridge and are mounted on opposite arms. For a bridge excitation voltage of 4 V and a bridge output voltage of 120 μV under load, estimate the strain in the member. What is the resistance change experienced by each gauge? The gauge factor for each of the strain gauges is 2.15 and Em for this steel is 29 × 10^6 psi.

Two strain gauges are mounted so that they sense axial strain on a steel member in uniaxial tension. The 120 Ω gauges form two legs of a Wheatstone bridge and are mounted on opposite arms. For a bridge excitation voltage of 4 V and a bridge output voltage of 120 μV under load, estimate the strain in the member. What is the resistance change experienced by each gauge? The gauge factor for each of the strain gauges is 2.15 and Em for this steel is 29 × 10^6 psi.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter5: Components, Symbols, And Circuitry Of Air-conditioning Wiring Diagrams

Section: Chapter Questions

Problem 27RQ: Change the following normally open elements from the de-energized position to the energized...

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