Mechanical Operations The main size reduction operation in ultrafine grinders is Attrition Impact Compression Cutting Attrition Impact Compression Cutting ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with __________ to get the same for dry grinding. 0.5 4.34 1 1.34 0.5 4.34 1 1.34 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is 0.1 0.6 0.4 None of these 0.1 0.6 0.4 None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The porosity of a compressible cake is Minimum at the upstream face Maximum at the filter medium Same throughout the thickness of cake Minimum at the filter medium Minimum at the upstream face Maximum at the filter medium Same throughout the thickness of cake Minimum at the filter medium ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns. 50 5000 500 5 50 5000 500 5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Toothed roll crushers achieve size reduction by Tearing (shear) and compression Impact and attrition Neither A nor B Both A & B Tearing (shear) and compression Impact and attrition Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP