Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

The Strain Gauge Element: A strain gauge operates on the principle of piezoresistivity. When mechanical stress or strain is applied to the gauge, its physical dimensions change, directly causing a change in its electrical resistance.

The Transducer System: While a strain gauge is typically connected to a Wheatstone bridge circuit to convert that resistance change into a measurable voltage signal, the primary output of the strain gauge element itself is strictly resistance.

While a strain gauge itself experiences a change in resistance due to applied strain, this change in resistance is typically converted into a voltage signal for amplification and measurement.

This conversion is often achieved using a Wheatstone bridge circuit.

Therefore, the final output quantity that is measured and interpreted is voltage.

If it asks only output of strain gauge then answer should be resistance.

Strain gauge output in the form of resistance.

What is stain measuring device?

Answer should be resistance.

Yes, the right answer is B.

Strain gauge @Asim.