Mechanical Operations The study on washability of coal is done by using the __________ technique. None of these Elutriation Tabling Heavy media separation None of these Elutriation Tabling Heavy media separation ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns. 5000 5 50 500 5000 5 50 500 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ore concentration by jigging is based on the difference in the __________ of the particles. Wettability Shape Specific gravities None of these Wettability Shape Specific gravities None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Choke crushing (in case of a Jaw crusher) compared to free crushing Both A and C Consumes more power Results in increased capacity Consumes less power Both A and C Consumes more power Results in increased capacity Consumes less power ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rod mills employed for grinding All of these Is useful for handling sticky materials Employ steel rods of 2-12 cms diameter extending over full length of the mill Employ a steel shell having L/D ratio of 1.5 to 3.0 All of these Is useful for handling sticky materials Employ steel rods of 2-12 cms diameter extending over full length of the mill Employ a steel shell having L/D ratio of 1.5 to 3.0 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's crushing law states that Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product For a given machine and feed, crushing efficiency is dependent on the size of the feed & product Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product Work required in crushing is proportional to the new surface created Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product For a given machine and feed, crushing efficiency is dependent on the size of the feed & product Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product Work required in crushing is proportional to the new surface created ANSWER DOWNLOAD EXAMIANS APP
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