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)²p √(S/V)p (S/V)f (S/V)p (S/V)²p √(S/V)p (S/V)f ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size ) S/c C/s S . c 1/s . c S/c C/s S . c 1/s . c 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 Precoated on the filter medium prior to filtration Separated from the cake by dissolving solids or by burning it off All of these Added to the feed slurry Precoated on the filter medium prior to filtration Separated from the cake by dissolving solids or by burning it off All of these Added to the feed slurry ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The porosity of a compressible cake is Same throughout the thickness of cake Minimum at the upstream face Maximum at the filter medium Minimum at the filter medium Same throughout the thickness of cake Minimum at the upstream face Maximum at the filter medium Minimum at the filter medium ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation? Toggles Crush shaft Check plates Jaw plates Toggles Crush shaft Check plates Jaw plates ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns. 5000 50 500 5 5000 50 500 5 ANSWER DOWNLOAD EXAMIANS APP
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