Mechanical Operations Crushing efficiency of a machine ranges between __________ percent. 0.1 to 2 20 to 25 5 to 10 50 to 70 0.1 to 2 20 to 25 5 to 10 50 to 70 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The sphericity of a solid particle of cubical shape is π/3 (π/6)1/3 (π/6)1/2 π π/3 (π/6)1/3 (π/6)1/2 π ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not an ultrafine grinder (colloid mill)? Micronizers Agitated mills and fluid energy mills Toothed roll crusher Hammer mills with internal classification Micronizers Agitated mills and fluid energy mills Toothed roll crusher Hammer mills with internal classification 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 grinding of large particles (upto 1.25 cms) Wet grinding in low viscous suspension Wet grinding in high viscous suspension Dry grindng of large particles in un-baffed mills Dry grinding of large particles (upto 1.25 cms) Wet grinding in low viscous suspension Wet grinding in high viscous suspension Dry grindng of large particles in un-baffed mills ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Solid particles of different densities are separated by Cyclones Filters Thickness Sorting classifier Cyclones Filters Thickness Sorting classifier ANSWER DOWNLOAD EXAMIANS APP
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
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