Ahydraulic cylinder is to compress a car body down to bale size in 1 min. the operation requires a 60ft stroke and a 1500-lb force. if a 2000-psi pump has been selected and assuming 80% efficiency, find: a) the required piston area b) the necessary pump flow rate c) the hydraulic hp delivered to the cylinder d) the output hp delivered by the cylinder to the load

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

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.