Monkey
...lf heating. This strain gauge is of the bonded metal foil structure type (common) and the gauge factor of 2.00 has a low temperature coefficient of ¡Ó0.015%/¢XC so it doesn¡¦t vary with temperature to any great degree. The value of the strain gauges unstrained resistance is 120¡Ó0.5% ƒÇ so the value might not be exactly the same for the four strain gauges to be used in the circuit. However, as the bridge circuit can be balanced this is not a problem (see diagram in Section 3). 2. How the strain gauges should be arranged to sense the shear stresses on the surface of the shaft. For a circular cross-section shaft under pure torque, the shear stresses are equal in the longitudinal and circumferential directions, everywhere on the surface of the shaft. A strain gauge is, however, is totally insensitive to shear strains and is only sensitive to normal strains along its axis. This me...