Question

The torque transmitted by a cylindrical shaft is to be measured by using two strain gauges. The angles for mounting the strain gauges relative to the axis of the shaft for maximum sensitivity are

• A. $\pm {45}^{\circ }$
• B. $\pm {60}^{\circ }$
• C. $\pm {90}^{\circ }$
• D. $\pm {180}^{\circ }$

Answer 1

The correct option is A $\pm {45}^{\circ }$

For maximum sensitivity the angles for measuring the strain gauges is $\pm \pi /4or\pm {45}^{\circ }$