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States of Equilibrium

A strain gaug...

Question

A strain gauge has gauge factor G = -100 type of the strain gauge is

A

Unbounded metal type

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B

Bonded metal foil type

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C

p-type semi-conductor

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D

n-type semi-conductor

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Solution

The correct option is D n-type semi-conductor
Semiconductor strain gauge have very high gauge factor and for
p-type $\Rightarrow$ Gauge factor is +ve
n-type $\Rightarrow$ Gauge factor is -ve

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