One kilogram of air is compressed from a volume of 1.0 m and a pressure of 100 kPa to a volune of D.147 m and a pressure of 1000 kPa. Assuming that he compression follows the law pu" he work done during the compression process. = constant, find

AT. 2] a water pump is to be used in a water supply system as shown in the figure. The pressure at point 1 is 70 kPaa and the pressure at point 2 is 101 kPaa. The velocity in the 60-mm pipe is 2 m/s. Find the pump power. Neglect friction, and assume no change of internal energy of the water and no heat transfer between point 1 and 2. Take the density of water at standard condition. 2 m2 10 m Pump

Q3) A piston cylinder contains 1 Kg of water at 20 C and 300 KPa . Initially the piston floats. With a maximum enclosed volume of 0.02 m? if the piston touches the stops. Now heat is added 5o a final pressure of 600 KPa is reached. Find the final volume.

The rapid progress of engineering design and information technology has caused difficulties in analyzing system reliability. Because of the increased complexity in system reliability structure (component/subsystem interfaces), many unexpected failure modes could occur, and their behaviors are interdependent. At a system’s design and development stage, the main challenge in analyzing a complex system is the failure uncertainty introduced by the incomplete knowledge of the system. This makes it hard to decompose system reliability into subsystem/component reliability in a deterministic manner, such as series or parallel systems. As a result, some common reliability analysis tools such as fault tree (FT) and reliability block diagram (RBD) become inadequate. Do you agree, why or why not? Are there any other approaches to system reliability assessment beside these tools at the early system’s design and development stage (what are these approaches)?