Engineering, 07.08.2019 18:30 vale2652
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.
Answers: 2
Engineering, 04.07.2019 18:20
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
Answers: 3
Engineering, 04.07.2019 19:10
Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)
Answers: 3
Engineering, 04.07.2019 19:20
Determine (a) the maximum thermal efficiency of reversible power cycles operating between a hot reservoir at 1000°c and a cold reservoir at 200°c and (b) the maximum cops for reversible refrigeration and heat pump cycies, respectively, between 28°c and 14°c.
Answers: 1
Engineering, 04.07.2019 19:20
Acircular pipe of 30mm outside diameter is placed in an airstream at 30 c and latm pressure. the air moves in cross flow over the pipe at 20 m/s, while the outer surface of the pipe is maintained at 110 c. what is the drag force exerted on the pipe per unit length? what is the rate of heat transfer from the pipe per unit length?
Answers: 1
Refrigerant at a pressure of 100 kpa and a quality of 50% initially fills a rigid vessel having a vo...
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