Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 0.66 1 0.5 2.76 0.66 1 0.5 2.76 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called Decantation Classification Clarification Sedimentation Decantation Classification Clarification Sedimentation ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The most suitable equipment for the transportation of 200 mesh size particles is a Bucket elevator Pneumatic conveyor Screw conveyor Belt conveyor Bucket elevator Pneumatic conveyor Screw conveyor Belt conveyor ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Equivalent diameter of a particle is the diameter of the sphere having the same Volume as the particle Ratio of volume to surface as the particle Ratio of surface to volume as the actual volume None of these Volume as the particle Ratio of volume to surface as the particle Ratio of surface to volume as the actual volume None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations According to Bond crushing law, the work required to form particle of size 'D' from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively). (S/V)p (S/V)f (S/V)²p √(S/V)p (S/V)p (S/V)f (S/V)²p √(S/V)p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Metallic wire mesh is used as a filtering medium for the separation of dust from dust laden gas in case of a/an Bag filter Hydrocyclones Venturi scrubber Air filter Bag filter Hydrocyclones Venturi scrubber Air filter ANSWER DOWNLOAD EXAMIANS APP
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