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Electrical strain gauges measure changes in _______

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Electrical strain gauges measure changes in _______

(a) resistance, capacitance and inductance

(b) resistance only

(c) capacitance only

(d) inductance only

I have been asked this question during an online exam.

This intriguing question originated from Types of Strain Gauges in chapter Transducers of Electrical Measurements

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The correct option is (a) resistance, capacitance and inductance

Easy explanation: Strain is transferred between the specimen and the gauge element in a strain gauge. Electrical strain gauges measure the changes occurring in resistance, capacitance and inductance.

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