Consider production of power by an adiabatic gas turbine. Air enters the turbine at 1200 kPa and 550ºC through a 0.1 m2 opening with an average velocity of 40 m/s. The air leaves the turbine at 120 kPa and 150ºC through a 0.950 m2 opening. Assume that air is an ideal gas with constant heat capacity and that the process is at steady-state, in other words, do not use the property tables for air in the back of the book. (a) Determine the mass flow rate of the air through the turbine, in kg/s.
(b) Determine the power produced by the turbine, in kW.

unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.

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