Steam is supplied to a two-stage turbine at 48 bar and 400 °C. It expands in the first turbine until it is just dry saturated, then it is re-heated to 400 °C and expanded through the second-stage turbine. The condenser pressure is 0.04 bar. what is the temperature in degrees celcius at state 4? find the thermal efficiency of the system in percentage to 2.d.p?

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