Mechanical Operations Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about 5 to 10° 1 to 2° 2 to 5° 10 to 15° 5 to 10° 1 to 2° 2 to 5° 10 to 15° ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The optimum moisture content in solids to be crushed/ground ranges from __________ percent. 3 to 4 8 to 10 10 to 15 15 to 20 3 to 4 8 to 10 10 to 15 15 to 20 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a turbine agitated and baffled tank, operating at low Reynold's number (based on impeller diameter), the power number (Np) varies with NRe as Np ∝ 1/NRe Np ∝ √NRe Np ∝ NRe Np → constant Np ∝ 1/NRe Np ∝ √NRe Np ∝ NRe Np → constant ANSWER DOWNLOAD EXAMIANS APP
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? Cylinder (L/D = 1) Sphere Cube Raschig rings Cylinder (L/D = 1) Sphere Cube Raschig rings ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Gizzlies are used for separating __________ solids. Coarse Fine Any size None of these Coarse Fine Any size None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is Φs is defined by Φs = 6 dp Sp/Vp Φs = Vp/dp sp Φs = dp Sp/Vp Φs = 6 Vp/dp sp Φs = 6 dp Sp/Vp Φs = Vp/dp sp Φs = dp Sp/Vp Φs = 6 Vp/dp sp ANSWER DOWNLOAD EXAMIANS APP
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