Mechanical Operations Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation? Toggles Jaw plates Crush shaft Check plates Toggles Jaw plates Crush shaft Check plates 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 AVS/ρ 3.6 AVS.ρ 3.6 A.S. ρ 3.6 A.V.ρ 3.6 AVS/ρ 3.6 AVS.ρ 3.6 A.S. ρ 3.6 A.V.ρ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations As per Taggart's formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms ) 250 LS 93 LS √LS LS 250 LS 93 LS √LS LS ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Actual operating speed of a ball mill may vary from 65 to 80% of the critical speed. Which of the following duties would require the ball mill to be operated at maximum percentage of critical speed? Dry grindng of large particles in un-baffed mills Wet grinding in low viscous suspension Dry grinding of large particles (upto 1.25 cms) Wet grinding in high viscous suspension Dry grindng of large particles in un-baffed mills Wet grinding in low viscous suspension Dry grinding of large particles (upto 1.25 cms) Wet grinding in high viscous suspension ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) 0.5 D D 2 D 1.5 D 0.5 D D 2 D 1.5 D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Grindability of a material does not depend upon its Hardness Elasticity Size Toughness Hardness Elasticity Size Toughness ANSWER DOWNLOAD EXAMIANS APP
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