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. 5 5000 50 500 5 5000 50 500 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pick out the material having minimum Rittinger's number. Quartz Galena Pyrite Calcite Quartz Galena Pyrite Calcite ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is 1125 460 230 2250 1125 460 230 2250 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a mixer, the quantity, (v. L/D) is termed as __________ number(where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing). Weber Peclet Schmidt Brinkman Weber Peclet Schmidt Brinkman ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the selectivity index, if the grade of tailings & concentrate is the same? 0.5 1 ∞ 0.5 1 ∞ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Additives used for promoting the floccula-tion of particles is a/an Electrolyte Both A & B Surface active agent Neither A nor B Electrolyte Both A & B Surface active agent Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS