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Considering that a steam turbine has the following properties, what is the isentropic efficiency of the...

Considering that a steam turbine has the following properties, what is the isentropic efficiency of the turbine?

Inlet Steam: 600 psig and 1472°F

Turbine Properties: Generator Efficiency = 65% and Power Out = 40 kw

Outlet Steam: 400 psig and 1000°F

Now you have two of these turbines in series, what is the efficiency of the two together?

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