Amultiple disk clutch, steel on bronze, is to transmit 5 hp at 750 rpm. the inner radius of contact is 1.5 in and the outer radius of contact is 2.75 in. the clutch operates in oil with an expected coefficient of friction 0.10. (oil is used to give smoother engagement, better dissipation of heat, even though the capacity is reduced.) the average allowable pressure. is 50 psi, maximum. (how design pressures are used to provide for sufficient size to give yood heat dissipation capacity.) assuming uniform wear, determine the following: a) how many total dishes of sted and bronze are required? b) what axial force is required? c) what is the average pressure?

Steam at a pressure of 100 kpa and a quality of 50% initially fills a rigid vessel having a volume of 0.5 m^3. the steam is then heated, causing the pressure in the vessel to rise to 150 kpa. determine: i. the mass of the steam in the vessel. ii. the temperature and quality of the steam after the heating process. ii the mass of the vapour, mg and liquid, m in the vessel after the heating process. if the steam in the vessel is now further heated, what would the pressure and temperature in the vessel be when all steam has turned into saturated vapour? b. sketch the processes in part (a) and part (b) on p-v and t-v diagrams, indicating clearly the temperatures, pressures and the paths. c. (0.59kg, 111.4°c, 73%, 0.4307kg, 0.1 593kg, 2.11 bar, 121.84°c)