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2. (40) A turbojet operates with the conditions listed below, with an ideal gas with constant specific heats; cp=1004 J/(kg K) and k=1.4. Use

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2. (40) A turbojet operates with the conditions listed below, with an ideal gas with constant specific heats; cp=1004 J/(kg K) and k=1.4. Use the air standard model. Use the state numbering system shown in Example 9.13 of the text. Processes a-1-2 and 3-4-5 are adiabatic. All processes except the compressor in part b are internally reversible. The devices operate at steady state. Neglect potential energy effects. It is not necessary to verify the validity of the properties listed in the table: STATE T, K p, bar Velocity, m/s a (diffuser inlet) 240 0.35 200 1 (compressor inlet) 260.0 0.463 approx. 0 2 (combustor inlet) T2 4.63 approx. 0 3 (turbine inlet) 1400 4.63 approx. 0 4 (nozzle inlet) T4 P4 approx. 0 5 (nozzle exit) T5 0.35 V5 a) Find T2, T4, P4, T5, and Vs if the compressor is internally reversible. b) Find T2, T4, P4, T5, and V5 i if the compressor has an isentropic efficiency of 75%

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