Consider the rankine power cycle using vapor and liquid. there is a method to lower the condenser pressure (or to decrease the average low temperature) in order to improve the efficiency of the ideal rankine cycle. explain its advantages and disadvantages explicitly.

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.