A550 mm outer diameter by 350mm inner diameter cast iron hub with 100gpa modulus of elasticity and 300mm in length is to have a shrink fit with a 350mm outer diameter by 250mm inner diameter steel shaft with 200gpa modulus of elasticity. the maximum tangential stress is to be 100mpa. given that the coefficient of friction is to be 0.15, the to be 0.30 and cast iron is to be 0.2. determine: i) the maximum interference ii) the axial force required to fit the hub on to the shaft iii) the torque transmitted by the shaft

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

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

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0