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? 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 Dry grinding of large particles (upto 1.25 cms) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise)? Propeller Flat blade turbine Helical screw Curved blade turbine Propeller Flat blade turbine Helical screw Curved blade turbine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The unit of filter medium resistance is Cm/gm⁻¹ Cm⁻¹ Gm⁻¹ Gm/cm⁻¹ Cm/gm⁻¹ Cm⁻¹ Gm⁻¹ Gm/cm⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The operating speed of a ball mill should be __________ the critical speed. Slightly more than Less than Much more than At least equal to Slightly more than Less than Much more than At least equal to ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a hammer crusher, the final product size depends on the Clearance between hammer & grinding plates Feed rate Rotor speed All of these Clearance between hammer & grinding plates Feed rate Rotor speed All of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is a pressure filter? Rotary drum filter Leaf filter (Moore filter) Sand filter Plate and flame filter Rotary drum filter Leaf filter (Moore filter) Sand filter Plate and flame filter ANSWER DOWNLOAD EXAMIANS APP
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