Mechanical Operations Grinding efficiency of a ball mill is of the order of __________ percent. 75-80 43835 40-50 90-95 75-80 43835 40-50 90-95 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ore concentration by jigging is based on the difference in the __________ of the particles. Specific gravities Shape None of these Wettability Specific gravities Shape None of these Wettability ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle). 2/D.p 12/D.p 4/D.p 6/D.p 2/D.p 12/D.p 4/D.p 6/D.p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Electrical energy consumed by a jaw crusher is not a function of the Machine capacity Average feed size None of these Average product size Machine capacity Average feed size None of these Average product size ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During size reduction by a jaw crusher, the energy consumed decreases with the Decreasing machine capacity Decreasing size of product at constant size of feed Increasing size of feed at constant reduction ratio None of these Decreasing machine capacity Decreasing size of product at constant size of feed Increasing size of feed at constant reduction ratio None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The optimum moisture content in solids to be crushed/ground ranges from __________ percent. 10 to 15 8 to 10 15 to 20 3 to 4 10 to 15 8 to 10 15 to 20 3 to 4 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS