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3) Steam enters a turbine at 4 MPa and 500 degrees C and leaves the turbine at .4 MPa and 200 degrees C. What is

3) Steam enters a turbine at 4 MPa and 500 degrees C and leaves the turbine at .4 MPa and 200 degrees C.

What is the specific work produced by the turbine? What is the entropy change of the steam passing through the turbine? If the turbine were operating with 100% isentropic efficiency, what's its specific work? What's the efficiency of the turbine?

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