Mechanical Operations Solid particles separation based on the difference in their flow velocities through fluids is termed as the Sedimentation Clarification Elutriation Classification Sedimentation Clarification Elutriation Classification ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the 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 (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 ton of feed to 100 microns 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 (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 ton of feed to 100 microns Energy needed to crush one tonne of feed to 200 microns ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, the specific surface shape factor is given by D/V AD/V A/V √(AD/V) D/V AD/V A/V √(AD/V) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the Blake jaw crusher Cage mill Stamp mill Bradford's breaker Blake jaw crusher Cage mill Stamp mill Bradford's breaker ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is Φs is defined by Φs = dp Sp/Vp Φs = 6 Vp/dp sp Φs = Vp/dp sp Φs = 6 dp Sp/Vp Φs = dp Sp/Vp Φs = 6 Vp/dp sp Φs = Vp/dp sp Φs = 6 dp Sp/Vp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Helical screw agitator is used for None of these Mixing highly viscous pastes Blending immiscible liquids Mixing liquids at very high temperature (> 250 °C) None of these Mixing highly viscous pastes Blending immiscible liquids Mixing liquids at very high temperature (> 250 °C) ANSWER DOWNLOAD EXAMIANS APP
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