A cyclone has an outside diameter of 1 m and a rectangular inlet (Height = 0.4 m and Width = 0.2 m). The gas flow rate is 2.4 m3/s (85 ft3/s) carrying particles with a density of 2,000 kg/m3. (a) Demonstrate the gas flow velocity inside the cyclone is equal to 30 m/s; (b) Determine the cut diameter with N = 5 and viscosity of air = 1.8 ´ 10-5 kg/m•s; (c) Estimate its removal efficiency for particles with diameter = 3μ

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.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?