Mechanical Operations For efficient grinding, ball mills must be operated With minimum possible small balls At a speed less than the critical speed At a speed equal to the critical speed At a speed more than the critical speed With minimum possible small balls At a speed less than the critical speed At a speed equal to the critical speed At a speed more than the critical speed ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Soft & non-abrasive materials can be made into fines by Compression Cutting None of these Attrition Compression Cutting None of these Attrition 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) S All of these 1/R 1/μ S All of these 1/R 1/μ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During agitation of liquids, power consumption during laminar flow is not proportional to the Cube of impeller diameters Square of rotational speed Density of the liquid Viscosity of the liquid Cube of impeller diameters Square of rotational speed Density of the liquid Viscosity of the liquid ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ball mills and tube mills with flint or porcelain balls are used for size reduction of Limestone Rubber Asbestos Non-metallic ores Limestone Rubber Asbestos Non-metallic ores ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a Boundary mixer Sharpies centrifuge None of these Propeller agitator Boundary mixer Sharpies centrifuge None of these Propeller agitator ANSWER DOWNLOAD EXAMIANS APP
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