Mechanical Operations During size reduction by a jaw crusher, the energy consumed decreases with the None of these Decreasing size of product at constant size of feed Decreasing machine capacity Increasing size of feed at constant reduction ratio None of these Decreasing size of product at constant size of feed Decreasing machine capacity Increasing size of feed at constant reduction ratio ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the Differential wettability Density separation Volatile matter content Size Differential wettability Density separation Volatile matter content Size ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is the most suitable for handling fibrous and dense slurries? Turbine agitator Cone type agitator Propeller agitator Radial propeller agitator Turbine agitator Cone type agitator Propeller agitator Radial propeller agitator ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For efficient grinding, ball mills must be operated At a speed more than the critical speed With minimum possible small balls At a speed equal to the critical speed At a speed less than the critical speed At a speed more than the critical speed With minimum possible small balls At a speed equal to the critical speed At a speed less than the critical speed ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's crushing law states that For a given machine and feed, crushing efficiency is dependent on the size of the feed & 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 Work required to form a particle of any size is proportional to the square 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 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 Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product ANSWER DOWNLOAD EXAMIANS APP
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