Mechanical Operations The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake) ∝ ΔP ∝ √ΔP Independent of ΔP ∝ 1/ ΔP ∝ ΔP ∝ √ΔP Independent of ΔP ∝ 1/ ΔP ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A compressible cake has the Same porosity throughout the cake thickness Maximum porosity at the filter medium None of these Maximum porosity at the upstream side Same porosity throughout the cake thickness Maximum porosity at the filter medium None of these Maximum porosity at the upstream side ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For efficient grinding, ball mills must be operated At a speed less than the critical speed With minimum possible small balls At a speed more than the critical speed At a speed equal to the critical speed At a speed less than the critical speed With minimum possible small balls At a speed more than the critical speed At a speed equal to the critical speed ANSWER DOWNLOAD EXAMIANS APP
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. 0.3 0.014 0.007 50 0.3 0.014 0.007 50 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Screen capacity is proportional to (where, S = screen aperture) S² 1/S S √S S² 1/S S √S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Toothed roll crushers achieve size reduction by Neither A nor B Tearing (shear) and compression Both A & B Impact and attrition Neither A nor B Tearing (shear) and compression Both A & B Impact and attrition ANSWER DOWNLOAD EXAMIANS APP
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