Mechanical Operations Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm. 0.014 50 0.007 0.3 0.014 50 0.007 0.3 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following terminology is not used for size reduction of materials to fine sizes or powders? Comminution Pulverisation Dispersion Compression Comminution Pulverisation Dispersion Compression ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The porosity of a compressible cake is Same throughout the thickness of cake Minimum at the filter medium Maximum at the filter medium Minimum at the upstream face Same throughout the thickness of cake Minimum at the filter medium Maximum at the filter medium Minimum at the upstream face 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 = Vp/dp sp Φs = dp Sp/Vp Φs = 6 dp Sp/Vp Φs = 6 Vp/dp sp Φs = Vp/dp sp Φs = dp Sp/Vp Φs = 6 dp Sp/Vp Φs = 6 Vp/dp sp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations 200 mesh seive size corresponds to __________ microns. 200 154 24 74 200 154 24 74 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations With increase in drum speed, in a rotary drum filter, the filtration rate Increases Is not affected Decreases Increases linearly Increases Is not affected Decreases Increases linearly ANSWER DOWNLOAD EXAMIANS APP
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