Question

A single strain gauge having a resistance of 240 S2, is mounted in the axial direction of an axially loaded specimen of steel (E = 300 Gpa). Due to loading, the
percentage change in length of the rod is 2% and the corresponding change in resistivity of strain gauge material is 0.2%. For the Poisson's ratio of 0.2, what
will be the value of the gauge factor?
s: A
O 1.3
B.
O 1.5
C.
O 1.7
DO 2​

Answer 1

Answer:

Signal Amplification – The output of strain gauges and bridges is relatively small. In practice, most strain gauge bridges and strain-based transducers will output less than 10 mV/V (10 mV of output per volt of excitation voltage). With a 10 V excitation voltage, the output signal will be 100 mV.