Mechanical Operations Wet grinding in a revolving mill __________ as compared to dry grinding. Requires more energy Increases capacity Gives less wear on chamber walls Complicates handling of the product Requires more energy Increases capacity Gives less wear on chamber walls Complicates handling of the product ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations According to Taggart's rule for selecting between a gyratory crusher and a jaw crusher; the later should be used, if the hourly tonnage to be crushed divided by the square of the gape expressed in cm is less than 0.00184 1.84 0.184 0.0184 0.00184 1.84 0.184 0.0184 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm)? Spiral separator Trough washer Froth floatation Baum jig washer Spiral separator Trough washer Froth floatation Baum jig washer ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Bucket elevators are not suitable for the vertical lifting of __________ materials. Sticky (e.g. clay paste) Small lumpy (e.g. grains and sand) Free flowing Fine (e.g. - 200 mesh size coal) Sticky (e.g. clay paste) Small lumpy (e.g. grains and sand) Free flowing Fine (e.g. - 200 mesh size coal) 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)²p (S/V)f √(S/V)p (S/V)p (S/V)²p (S/V)f √(S/V)p (S/V)p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their Particle sizes None of these Densities Terminal velocities Particle sizes None of these Densities Terminal velocities ANSWER DOWNLOAD EXAMIANS APP
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