QUESTION $1$

Steam initially at $20$ MPa and $508$ C is expanded adiabatically and reversibly to $0\mathrm{.}7940$ MPa $.$ Compute the work generated by the turbine

$(\frac{J}{g}).$

QUESTION $2$

Consider N$2$ at $490$ K and $5$ bar fed to an insulated continuous turbine. The pressure is reversibly decreased by a factor of $5\mathrm{.}3.$ The actual

outlet turbine temperature is $395$ K $.$ Compute the turbine efficiency. Express your answer as a fraction not a percentage.

QUESTION $3$

Consider propane at $508$ K and $7$ bar fed to an insulated continuous turbine. The pressure is reversibly decreased by a factor of $5\mathrm{.}3.$ The actual

outlet turbine temperature is $494$ K $.$ Compute the turbine efficiency while treating propane as an ideal gas. Express your answer as a fraction

not a percentage.

QUESTION $4$

Steam initially at $20$ MPa and $464$ C is expanded adiabatically to $0\mathrm{.}8$ MPa and saturated vapor. Compute the turbine efficiency.