A mild steel rod of 20mm diameter and 300mm long is enclosed centrally inside a hollow copper tube external diameter 30 mm and internal diameter of 25mm The end of the tube and rods are brazed together and the composite bar is subjected to an axil pull of 40KN . if E of steel and copper is 200GN/m2 and 100GN/m2

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.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux