Steam enters the turbine of a simple vapor power plant with a pressure of 60 bar, and a temperature of 500°C, and expand

[answerhappygod]

Steam enters the turbine of a simple vapor power plant with a
pressure of 60 bar, and a temperature of 500°C, and expands
adiabatically to a condenser pressure, p, where it fully
condenses to a quality of zero at the condenser exit (x = 0).
The isentropic efficiency of both the turbine and the pump is
85%.
a) Plot (1) the turbine exit quality, and (2) the cycle
thermal efficiency for condenser pressures ranging from 10 kPa to
100 kPa. (Hint: increment condenser pressure in steps of no less
than 10 kPa). Show sample calculations for one condenser
pressure.
b) What design operating point would you choose so that
the cycle has best performance?
c) What modifications to the selected cycle can you
implement to improve its performance? Show
one example modification along with the calculations of the
improved performance.