Question

Which of the following are reasons that strain gauges, which are sensors that measure strain in a structure, are used in a Wheatstone Bridge configuration?

a. It zeros out effects of thermal expansion

b. It allows you to measure the large voltages that result from the strain gauge measurements

c. It allows you to measure small variation in strain with good resolution.

d. You have more redundancy in using four strain gauges rather than one.

Answer 1

a. It zeros out effects of thermal expansion

c. It allows you to measure small variation in strain with good resolution.