Mechanical Operations A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 μm/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is 22.1 μm/s 1 μm/s 0.02 μm/s 0.90 μm/s 22.1 μm/s 1 μm/s 0.02 μm/s 0.90 μm/s ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Trommels are revolving screens which normally operate in the range of __________ rpm. 15 - 20 40 - 50 43832 60 - 75 15 - 20 40 - 50 43832 60 - 75 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ balls capable of grinding the feed in a ball mill gives the maximum efficiency. Elliptical Minimum size Maximum size Cast iron Elliptical Minimum size Maximum size Cast iron ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Optimum ratio of operating speed to critical speed of a trommel is 0.33-0.45 1.5-2.5 0.5-2 1.33-1.45 0.33-0.45 1.5-2.5 0.5-2 1.33-1.45 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for All of these American standard screens (ASTM and Tyler standard screens) British standard screens German standard screens (DIN 1171) etc All of these American standard screens (ASTM and Tyler standard screens) British standard screens German standard screens (DIN 1171) etc ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a hammer crusher, the final product size depends on the Clearance between hammer & grinding plates Feed rate Rotor speed All of these Clearance between hammer & grinding plates Feed rate Rotor speed All of these ANSWER DOWNLOAD EXAMIANS APP
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