For the system ethyl ethanoate(1)/n-heptane(2) at 343.15 K, lnγ1 = 0.95x2 2; lnγ2 = 0.95x1 2; P1 sat = 79.80 kPa; and P2 sat = 40.50 kPa. Assuming the validity of Eq. (13.19), (a) Make a BUBL P calculation for T = 343.15 K, x1 = 0.05. (b) Make a DEW P calculation for T = 343.15 K, y1 = 0.05.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)

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.