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[30] Q3) Air at $200kPa$ and $350K$ enters an adiabatic nozzle at low velocity. At the outlet of the nozzle the pressure is measured as $150kPa$. (Consider constant thermophysical properties: $Cp=1.008kJ/kg$ $k,k=1.398)$ Consider air as ideal gas under these conditions. [5] a) Determine the maximum possible velocity at the nozzle outlet. [5] b) What would be the exit velocity for a nozzle with efficiency of $0.9$ ? [10] c) Calculate and plot in EXCEL the air temperature at the nozzle outlet for a range of nozzle efficiencies btw $0.8$ and $1.0$. [10] d) Calculate and plot in EXCEL the entropy generation inside the nozzle, for a range of nozzle efficiencies btw $0.8$ and $1.0$.

a) To determine the maximum possible velocity at the nozzle outlet, we can use the adiabatic nozzle equation:t2st1=(P2sP1)k?1kT(2s)=350×((150200)1.398

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