Mechanical Operations Gravity settling process is not involved in the working of a Classifier Dorr-thickener Sedimentation tank Hydrocyclone Classifier Dorr-thickener Sedimentation tank Hydrocyclone ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Temperature of the product during ultrafine grinding Remains constant Decreases May increase or decrease ; depends on the material being ground Increases Remains constant Decreases May increase or decrease ; depends on the material being ground Increases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a Cyclone separator between mill & classifier Both A & B Classifier Neither A nor B Cyclone separator between mill & classifier Both A & B Classifier Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the Energy needed to crush one tonne of feed to 200 microns Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy needed to crush one ton of feed to 100 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one tonne of feed to 200 microns Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy needed to crush one ton of feed to 100 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy consumed by a ball mill depends on Its ball load All of these Its speed The density of the material being ground Its ball load All of these Its speed The density of the material being ground ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The unit of filter medium resistance is Cm⁻¹ Gm/cm⁻¹ Gm⁻¹ Cm/gm⁻¹ Cm⁻¹ Gm/cm⁻¹ Gm⁻¹ Cm/gm⁻¹ ANSWER DOWNLOAD EXAMIANS APP
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