Agas contained within a piston-cylinder undergoes the follow change in states: process 1: constant volume from p1 = 1 bar v1 = 2.6 m3 to state 2 with p2 = 2.7 bar process 2: compression to v3 = 1.5 m3, which the pressure-volume relationship is pv = constant. process 3: constant pressure to state 4, where v4 = 0.5 m3. sketch the processes on p-v graph and evaluate the work for each process in kj.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

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.

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?