Dry saturated steam flowing at a mass flowrate of 95 lbm/h and a temperature of 120oF is condensed along a 2.5 ft long tube cooled from the outside by liquid water in crossflow. The water temperature is 50oF, and the corresponding heat transfer coefficient between the water and the outer surface of the tube is 240 Btu/h-ft2-oF. The outer diameter of the tube is 6.8 in, the tube wall thickness is 0.25 in, and the thermal conductivity of the tube material is 30 Btu/h-ft-oF. Determine the steam quality at pipe exit.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.