Mechanical Operations For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to None of these The new surface created The size reduction ratio The change in volume due to crushing None of these The new surface created The size reduction ratio The change in volume due to crushing ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Additives used for promoting the floccula-tion of particles is a/an Both A & B Neither A nor B Surface active agent Electrolyte Both A & B Neither A nor B Surface active agent Electrolyte ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ is the most commonly used 'filter aid'. Semi-plastic clay Fuller's earth Vermiculite Diatomaceous earth Semi-plastic clay Fuller's earth Vermiculite Diatomaceous earth ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A widely used size reduction equipment for __________ is Bradford breaker. Wheat Coal Iron core Talc Wheat Coal Iron core Talc 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? Raschig rings Sphere Cube Cylinder (L/D = 1) Raschig rings Sphere Cube Cylinder (L/D = 1) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripherial velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m³ here, V =πN.D where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) 3.6 V.W. ρ 3.6 V.W.Dr/ρ 3.6 W.Dr.ρ 3.6 V.W.Dr.ρ 3.6 V.W. ρ 3.6 V.W.Dr/ρ 3.6 W.Dr.ρ 3.6 V.W.Dr.ρ ANSWER DOWNLOAD EXAMIANS APP
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