Steam enters an adiabatic turbine at 6mpa, 600°c, and 80 m/s and leaves at 50 kpa, 100°c, and 140 m/s. if the power output of the turbine is 10 mw determine (a) the reversible power output and (b) the second-law efficiency of the turbine. assume the surroundings to be at 25°c.

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.