Refrigerant at a pressure of 100 kpa and a quality of 50% initially fills a rigid vessel having a volume of 0.5 m3. the refrigerant is then heated, causing the pressure in the vessel to rise to 200 kpa. follows by another heating process until all of the refrigerant turn into saturated vapour cile ol terasest the fal state. sketch the overall processes on p-v and t-v diagrams, indicating clearly the state, specific volume, temperatures, pressures and the paths. ii. ii. recheck all of your answer and indicate the unit appropriately.

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.

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.

Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan