Mechanical Operations For efficient grinding, ball mills must be operated 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 At a speed less than the critical speed With minimum possible small balls ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its High power consumption in grinding Poor grindability None of these Easier grindability High power consumption in grinding Poor grindability None of these Easier grindability ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their Densities None of these Particle sizes Terminal velocities Densities None of these Particle sizes Terminal velocities ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following mineral dressing operations is termed as 'comminution'? Spiralling None of these Tabling Panning Spiralling None of these Tabling Panning ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations To produce talcum powder, use Jet mill Hammer mill Ball mill Pin mill Jet mill Hammer mill Ball mill Pin mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a grinding operation, the limiting particle size is the size of the __________ particle in the sample. Neither A nor B Either A or B Largest Smallest Neither A nor B Either A or B Largest Smallest ANSWER DOWNLOAD EXAMIANS APP
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