Wet steam flows in a pipe at a pressure of 700 kpa to check, Ask an Expert

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Wet steam flows in a pipe at a pressure of 700 kPa. To check the steam quality, the wet steam is expanded to pressure of 100 kPa. The expansion process may be assumed to be isenthalpic (no enthalpy change). The expanded steam is found to have a pressure of 125C. What is the steam quality before expansion?

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