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Measurements & InstrumentationStrain Measurement

A strain gauge is commonly used to measure strain through a change in?

  • AElectrical resistance
  • BMagnetic permeability only
  • COptical frequency only
  • DBattery voltage only
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Correct Answer: A. Electrical resistance
Explanation: Mechanical strain changes the gauge's dimensions and therefore its electrical resistance.
Reference: Standard measurements and instrumentation: strain measurement
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