Q.3 Determine the length (L) and width (W) in meter for a single tray gravity settler of height (H) 1 m to remove all the iron particulates from a dust-laden gas stream with the data given as: dp = 50m uniform; Q = 7.5 m3/s; p =8.00 g/cc, gas inlet velocity = 2 m/s. Consider the viscosity of gas is 1.81 kg/m s.