Gauge factor is given by which of the following relation?(a) S = \(\frac{\Delta R/R}{\Delta l}\)(b) S = \(\frac{\Delta R}{\Delta l/l}\)(c) S = \(\frac{R}{\Delta l/l}\)(d) S = \(\frac{\Delta R/R}{\Delta l/l}\)I had been asked this question during an interview.I'm obligated to ask this question of Operation of Strain Gauges topic in section Transducers of Electrical Measurements

Gauge factor is given by which of the following relation?(a) S = \(\fr

1.	Gauge factor is given by which of the following relation?(a) S = \(\frac{\Delta R/R}{\Delta l}\)(b) S = \(\frac{\Delta R}{\Delta l/l}\)(c) S = \(\frac{R}{\Delta l/l}\)(d) S = \(\frac{\Delta R/R}{\Delta l/l}\)I had been asked this question during an interview.I'm obligated to ask this question of Operation of Strain Gauges topic in section Transducers of Electrical Measurements
Answer» The correct OPTION is (d) S = \(\frac{\DELTA R/R}{\Delta l/l}\) The explanation: GAUGE factor in a strain gauge is given by the relation S = \(\frac{\Delta R/R}{\Delta l/l}\) where, S is the gauge factor R is the gauge wire resistance ∆R is the change in resistance l is the length of the wire in UNSTRESSED condition ∆l is the change in length of the wire.

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