Mechanical Operations During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration When half the filtrate has been obtained At the end of filtration At the end of filtration, but decreases with time subsequently At time zero When half the filtrate has been obtained At the end of filtration At the end of filtration, but decreases with time subsequently At time zero ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations According to Bond crushing law, the work required to form particle of size 'D' from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively). (S/V)p (S/V)f (S/V)²p √(S/V)p (S/V)p (S/V)f (S/V)²p √(S/V)p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m³) 3.6 A.V.ρ 3.6 A.S. ρ 3.6 AVS/ρ 3.6 AVS.ρ 3.6 A.V.ρ 3.6 A.S. ρ 3.6 AVS/ρ 3.6 AVS.ρ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals. Separation efficiency Concentration ratio Selectivity index None of these Separation efficiency Concentration ratio Selectivity index None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Gravity settling process is not involved in the working of a Hydrocyclone Classifier Dorr-thickener Sedimentation tank Hydrocyclone Classifier Dorr-thickener Sedimentation tank 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 2.76 0.5 0.66 1 2.76 0.5 0.66 ANSWER DOWNLOAD EXAMIANS APP
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