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 high viscous suspension Dry grinding of large particles (upto 1.25 cms) Wet grinding in low viscous suspension Dry grindng of large particles in un-baffed mills Wet grinding in high viscous suspension Dry grinding of large particles (upto 1.25 cms) Wet grinding in low viscous suspension Dry grindng of large particles in un-baffed mills ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ mill is not a revolving mill. Compartment Pebble Cage Tube Compartment Pebble Cage Tube ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ultracentrifuges running at speeds upto 100000 rpm is normally used for the Separation of cream from milk Dewaxing of lubricating oil Separation of isotopes based on their density or molecular weights difference Concentration of rubber latex Separation of cream from milk Dewaxing of lubricating oil Separation of isotopes based on their density or molecular weights difference Concentration of rubber latex ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is Φs is defined by Φs = 6 Vp/dp sp Φs = dp Sp/Vp Φs = Vp/dp sp Φs = 6 dp Sp/Vp Φs = 6 Vp/dp sp Φs = dp Sp/Vp Φs = Vp/dp sp Φs = 6 dp Sp/Vp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations 200 mesh screen means 200 openings per Cm² Inch² Inch Cm Cm² Inch² Inch Cm ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The study on washability of coal is done by using the __________ technique. Elutriation None of these Tabling Heavy media separation Elutriation None of these Tabling Heavy media separation ANSWER DOWNLOAD EXAMIANS APP
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