Question:
Poisson’s ratio of a metal is 0.35. Neglecting the piezo resistive effect, the gauge factor of the strain gauge made up of this metal is:
Poisson’s ratio of a metal is 0.35. Neglecting the piezo resistive effect, the gauge factor of the strain gauge made up of this metal is:
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Use the formula \( \text{Gauge Factor} = 1 + 2\mu \) for metals when piezoresistive effects are negligible.
Updated On: Jun 12, 2025
- 0.65
- 1
- 1.35
- 1.70
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The Correct Option is D
Solution and Explanation
To find the gauge factor of a strain gauge made from a metal with a Poisson's ratio of 0.35, we use the formula for the gauge factor (GF):
GF = 1 + 2ν
where ν is the Poisson's ratio.
Substitute the given value of Poisson's ratio (ν = 0.35) into the formula:
GF = 1 + 2(0.35)
Calculate the value:
GF = 1 + 0.70 = 1.70
Thus, the gauge factor of the strain gauge is 1.70.
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