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4.4 Steam flowing at steady-state enters a turbine at 400C and 6MPa. The exit is at 1.8 MPa. The turbine is 45% efficient. a) What is the condition and composition of the outlet stream assuming the process is reversible? b) How much work is produced per kg of steam when irreversibility, i.e., the efficiency, is taken into account? c) What is the temperature of the outlet in the real system compared to the reversible process