Steam enters a turbine with a velocity of 200 m/s at 60 bar and 740 oC and leaves as saturated vapor at 0.2 bar and 80 m/s. The actual work delivered during the process is 1300 kJ/kg. Surrounding is an atmospheric condition (298 K and 100 kPa). Assume SSSF process. What is the change in specific entropy of the steam during this process?