Mechanical Operations A tube mill as compared to a ball mill Gives finer size reduction but consumes more power Employs smaller balls All of these Has larger length/diameter ratio (>2 as compared to 1 for ball mill) Gives finer size reduction but consumes more power Employs smaller balls All of these Has larger length/diameter ratio (>2 as compared to 1 for ball mill) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a revolving mill, wet grinding compared to dry grinding Requires more energy Complicates handling & classification of the product None of these Has less capacity Requires more energy Complicates handling & classification of the product None of these Has less capacity 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 = Vp/dp sp Φs = dp Sp/Vp Φs = 6 Vp/dp sp Φs = 6 dp Sp/Vp Φs = Vp/dp sp Φs = dp Sp/Vp Φs = 6 Vp/dp sp Φs = 6 dp Sp/Vp 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 Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines? Rod mill Compartment mill Tube mill Pebble mill Rod mill Compartment mill Tube mill Pebble mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Soft & non-abrasive materials can be made into fines by None of these Attrition Cutting Compression None of these Attrition Cutting Compression ANSWER DOWNLOAD EXAMIANS APP
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