An air stream containing benzene is treated by a pollution control system, consisting of a hood, ductwork, activated carbon adsorbers, fan, and exhaust stack. The air flow rate is 150 standard m3/min (T = 20 oC and P = 1 atm). The ductwork is operated at T = 30 oC and a static pressure of -2.5 kPa while the barometric pressure is 0.99 atm. The ductwork dimensions are 0.4 m × 0.8 m. Find

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false