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Air enters a three-stage gas turbine at 100 kPa and 17 degree Celsius. This system uses a regenerator as well as reheating and interfolding. The pressure ratio across each compressor is 14.16; 300 kJ/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20 degrees Celsius. Determine the system's thermal efficiency.
Assume isentropic expansions for all compressor and the turbine stages and use constant specific heats at room temperature
air at 1 atm 90f and 8 fts enters a thin-walled tube of 4-inch diameter. the tube surface temperaure is maintained at
a shaft with a diameter of 100 mm rotates at 1500 rpm. a fluid-film bearing is designed to support a 5 kn load. assume
pressurized water pin 10 bar tin 110 deg c enters the bottom of an l 10-m-long vertical tube of diameter d 100 mm
calculate the force necessary to accelerate a 20 kg 400mm diameter sphere which is at rest under water at the rate of 5
the crane shown below consists of a 10 m swinging arm that is pinned at point a in the horizontal axis. the load at
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three kg of water in a piston-cylinder apparatus is initially in the saturated liquid state at 0.6 mpa. energy is added
At the exit, the pressure is 113 kPa and the temperature is 69 degrees C. Determine the mass flow rate, the exit velocity and the area of the exit.
air in a piston-cylinder assembly undergoes a process from state 1 where t1 300 k p1 100 kpa to state 2 where t2500 k
consider the function fxx3-2x4 on the interval -22 with h0.25. use the forward backward and centered finite difference
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