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Superheated steam at 2.0 MPa and 250 C feeds an adiabatic turbine and valve assembly shown below. The turbine produces work at the rate of

Superheated steam at 2.0 MPa and 250 C feeds an adiabatic turbine and valve assembly shown below. The turbine produces work at the rate of 1.0 MW and exhausts to 100 kPa. Calculate the mass flow rate through the valve needed to achieve the specified output conditions. Show your reasoning, and justify your assumptions

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