Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a Both A & B Classifier Neither A nor B Cyclone separator between mill & classifier Both A & B Classifier Neither A nor B Cyclone separator between mill & classifier ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Chance process is used for the Cleaning of coal Concentration of iron ore Water treatment Concentration of pyrites Cleaning of coal Concentration of iron ore Water treatment Concentration of pyrites ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In froth floatation, chemical agent added to cause air adherence is called Collector Frother Modifier Activator Collector Frother Modifier Activator 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 All of these Separated from the cake by dissolving solids or by burning it off Precoated on the filter medium prior to filtration Added to the feed slurry All of these Separated from the cake by dissolving solids or by burning it off Precoated on the filter medium prior to filtration Added to the feed slurry ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate) 1/μ All of these 1/R S 1/μ All of these 1/R S 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
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