You are given the task of designing an experiment to measure a strain with a hig

Question

You are given the task of designing an experiment to measure a strain with a high level of accuracy using a Wheatstone bridge measurement system equipped with a voltage sensor. The bridge input voltage is 10V and the output voltage reading has an error of ±1mV. The specimen is in uni-axial compression and the expected strain is around 0.002. You have available 4 identical fixed resistors and 4 identical strain gages, all of which have resistances of 150 Ohm, and the gage factor for the strain gages is F=1.6. Develop 2 possible setups for the experiment, each of which must compensate for temperature changes. Show a schematic of each setup including the placement of the gages on the specimen and the bridge configuration. Determine the bridge constant for each setup and the expected error in the strain reading for each case using the voltage error given above.

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