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)p (S/V)f (S/V)²p √(S/V)p (S/V)p (S/V)f (S/V)²p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. Decreases Increases May increase or decrease; depends on the machine Remains unchanged Decreases Increases May increase or decrease; depends on the machine Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The porosity of a compressible cake is Maximum at the filter medium Minimum at the upstream face Same throughout the thickness of cake Minimum at the filter medium Maximum at the filter medium Minimum at the upstream face Same throughout the thickness of cake Minimum at the filter medium ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Xanthates are used in the froth floatation process as a/an Frother Collector Activator Conditioner Frother Collector Activator Conditioner ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is Added to the feed slurry Separated from the cake by dissolving solids or by burning it off Precoated on the filter medium prior to filtration All of these Added to the feed slurry Separated from the cake by dissolving solids or by burning it off Precoated on the filter medium prior to filtration All of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of 'scrappers'? Screw conveyor Both B and C Flight conveyor Bucket conveyor Screw conveyor Both B and C Flight conveyor Bucket conveyor ANSWER DOWNLOAD EXAMIANS APP
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