A mixture of saturated liquid water and saturated steam at T = 393.15 K has a specific enthalpy of 2000 kJ/kg. What is the quality of this mixture?
A. 0.321
B. 0.738
C. 0.679
D. -0.138
E. 0.262
A. Incorrect. You probably calculated quality using the alternate definition (liquid fraction). Review the definition of quality (Equation 2.11).
B. Incorrect. You probably misread the steam tables. Reread them and redo the calculation.
C. Correct. Using the definition of quality in Equation 2.11, data given and the steam tables you obtained the correct value.
D. Incorrect. Quality is a mass fraction; it CANNOT be less than zero or greater than one. Review your algebra and your calculations.
E. Incorrect. Check how you read the steam tables and check the definition of quality.
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