(a) The terminal velocity of metal ball falling through liquid column is 3.0m/s. If the dlameter of metal ball is 5cms calculate the viscosity of the liquid if density of metal ball is 7000kg/m3 and density of the liquid is 1000kg/m3. Take g as 9.8m/s2. The NRe,p can be considered less than one. [4] (b) Calculate NPSHA if static suction head is 10mm, vapor pressure is 5mm and friction suction head is 3mm [2]