Mechanical Operations __________ are used for the separation of coarse particles from a slurry of fine particles. Classifiers Hydrocyclones Thickeners Decanters Classifiers Hydrocyclones Thickeners Decanters ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Temperature of the product during ultrafine grinding Increases Remains constant Decreases May increase or decrease ; depends on the material being ground Increases Remains constant Decreases May increase or decrease ; depends on the material being ground ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a hammer crusher, the Minimum product size is 3 mm Feed may be highly abrasive (Moh's scale >5) Maximum feed size may be 50 mm Rotor shaft carrying hammers can be vertical or horizontal Minimum product size is 3 mm Feed may be highly abrasive (Moh's scale >5) Maximum feed size may be 50 mm Rotor shaft carrying hammers can be vertical or horizontal ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 1 0.5 0.66 2.76 1 0.5 0.66 2.76 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following crushers can be considered as a combination of a jaw crusher and a roller crusher? Rod mill Fluid energy mill Gyratory crusher Ball mill Rod mill Fluid energy mill Gyratory crusher Ball mill 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.Dr.ρ 3.6 W.Dr.ρ 3.6 V.W. ρ 3.6 V.W.Dr/ρ 3.6 V.W.Dr.ρ 3.6 W.Dr.ρ 3.6 V.W. ρ 3.6 V.W.Dr/ρ ANSWER DOWNLOAD EXAMIANS APP
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