Consider a pipe that branches out into two parallel pipes and then rejoins at a junction downstream. the two parallel pipes have the same lengths and friction factors. the diameters of the pipes are 2 cm and 4 cm. if the flow rate in one pipe (2 cm diameter) is 10 l/min, the flow rate in the other pipe is :
a. 10 l/min
b. 3.3 l/min
c. 100 l/min
d. 40l/min
e. 56.6 l/min

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.