Mechanical Operations Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its Easier grindability None of these High power consumption in grinding Poor grindability Easier grindability None of these High power consumption in grinding Poor grindability ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Power consumption during turbulent flow in agitation tank is proportional to the __________ of the liquid. Viscosity Surface tension Thermal conductivity Density Viscosity Surface tension Thermal conductivity Density ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2/μ: Reynold's number N is the impeller rotational speed, and D is the impeller diameter. Po ∝ Re0.0 Po ∝ Re1.0 Po ∝ Re-1.0 Po ∝ Re0.5 Po ∝ Re0.0 Po ∝ Re1.0 Po ∝ Re-1.0 Po ∝ Re0.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The crushed material received for separation is called feed or Concentrate Heading Middling Tailing Concentrate Heading Middling Tailing ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Kick's law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick's constant is Kg/sec KWh/sec. kg KWh/kg KW. sec/kg Kg/sec KWh/sec. kg KWh/kg KW. sec/kg ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm) L.S 0.01 L.S 0.087 L.S L.S/0.087 L.S 0.01 L.S 0.087 L.S L.S/0.087 ANSWER DOWNLOAD EXAMIANS APP
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