Can the above device be used as a strain or length gauge?
PreLab: What is a “strain guage”…look this up online, or describe in your own words. Repeat 2c, above 5 times. Enter the data (50 resistance values) in a spreadsheet. b.a. Calculate the mean resistance and the standard deviation of the resistance at each length. Calculate the fractional standard deviations at each length. Q: Do you think this device is accurate enough to have some uses as a strain (or length) gauge? Discuss. Q: Is the graph of resistance vs. length linear as expected? If not, why not? Discuss. Q: If this graph is not linear, does this prevent the device from being useful as a strain (or length) gauge? Discuss. Q: Is there anything else you have observed that might prevent this device from being useful as a strain gauge? 4. – Devise a simple circuit to turn the changes in length into voltages that can be observed on the DMM. a. Devise the circuit using the bench power supply and one resistor. You specify the voltage and resistance. Do not go above 5 volts. b. Show you
