G Consider a beam of material subject to an axial load, a strain gauge is laminated on the top of the beam and aligned along the axis of loading. The strain gauge is subject to an axial strain (εA) and a strain associated with a temperature (εT) . 1. How would you use Wheatstone bridge to only measure the axial strain. 2. Derive an equation to only measure axial strain. 3. How do you connect the strain gauges to the Wheatstone bridge to only measure axial strain. 4. Show the active and compensation strain gauges on the Wheatstone bridge

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Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.