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) Dry grindng of large particles in un-baffed mills Wet grinding in low viscous suspension Wet grinding in high viscous suspension Dry grinding of large particles (upto 1.25 cms) Dry grindng of large particles in un-baffed mills Wet grinding in low viscous suspension Wet grinding in high viscous suspension ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Trommels employ __________ for screening of materials. Fibrous cloth Punched plate None of these Woven wire screen Fibrous cloth Punched plate None of these Woven wire screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The maximum slope of a belt conveyor can be 30° 60° 15° 45° 30° 60° 15° 45° ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their Particle sizes None of these Terminal velocities Densities Particle sizes None of these Terminal velocities Densities ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ribbon blenders are exclusively meant for Bath mixing Continuous mixing Non-flowing powder and thin pastes Blending miscible liquids Bath mixing Continuous mixing Non-flowing powder and thin pastes Blending miscible liquids ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) None of these π(=A/D²) π/6(=V/D³) AD/V None of these π(=A/D²) π/6(=V/D³) AD/V ANSWER DOWNLOAD EXAMIANS APP
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