Steam at 1.2 mpa and 320°c enters a diffuser steadily with a velocity of 150 m/s, and leaves at 3 mpa with a velocity of 50 m/s. during transit through the diffuser, 3 kj/kg of heat is lost to the atmosphere. a) sketch the diffuser and label the states. b) what is the specific enthalpy of the steam entering the diffuser? c) determine the specific enthalpy of the steam at the exit. d) determine the exit temperature of the steam. e) find the change in specific entropy of the steam as it passes through the diffuser.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.