Steam enters the turbine at 5.44 bar with dryness fraction of 0.9 & is expanded adiabatically to a pressure of 0.68 bar. It will enter the condenser with a quality very close to

Question

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The quality (dryness fraction) of steam increases during an adiabatic expansion in a turbine because the process involves a decrease in pressure and temperature, leading to a higher proportion of steam in the mixture. Given the initial conditions (5.44 bar, dryness fraction of 0.9) and the final pressure (0.68 bar), the final quality can be estimated using steam tables or Mollier chart. Without specific calculations or charts, the correct answer is based on the understanding that the quality increases, and among the given options, 0.815 is a reasonable estimate for the increase in quality due to adiabatic expansion to 0.68 bar.

Steam Enters the Turbine at 5