Electrical strain gauge works on the principle of __________(a) variation of resistance(b) variation of capacitance(c) variation of inductance(d) variation of areaI had been asked this question in a job interview.I need to ask this question from Operation of Strain Gauges in portion Transducers of Electrical Measurements

Electrical strain gauge works on the principle of __________(a) variat

1.	Electrical strain gauge works on the principle of __________(a) variation of resistance(b) variation of capacitance(c) variation of inductance(d) variation of areaI had been asked this question in a job interview.I need to ask this question from Operation of Strain Gauges in portion Transducers of Electrical Measurements
Answer» RIGHT answer is (a) variation of resistance The best EXPLANATION: An electrical strain gauge works on the basis of CHANGE in resistance as a function of strain. The WIRE resistance increases with TENSION and reduces with compression.

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