Mechanical Operations Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity? Raschig rings Cylinder (L/D = 1) Sphere Cube Raschig rings Cylinder (L/D = 1) Sphere Cube ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Solid particles of different densities are separated by Thickness Cyclones Filters Sorting classifier Thickness Cyclones Filters Sorting classifier ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a Classifier Neither A nor B Cyclone separator between mill & classifier Both A & B Classifier Neither A nor B Cyclone separator between mill & classifier Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ balls capable of grinding the feed in a ball mill gives the maximum efficiency. Elliptical Maximum size Minimum size Cast iron Elliptical Maximum size Minimum size Cast iron ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Trommels employ __________ for screening of materials. Woven wire screen Fibrous cloth None of these Punched plate Woven wire screen Fibrous cloth None of these Punched plate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the Square root of the velocity Square of the viscosity Filtration time only Washing time only Square root of the velocity Square of the viscosity Filtration time only Washing time only ANSWER DOWNLOAD EXAMIANS APP
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