Mechanical Operations If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is Φs is defined by Φs = dp Sp/Vp Φs = 6 dp Sp/Vp Φs = 6 Vp/dp sp Φs = Vp/dp sp Φs = dp Sp/Vp Φs = 6 dp Sp/Vp Φs = 6 Vp/dp sp Φs = Vp/dp sp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Gravity stamp mill is meant for the __________ crushing. Primary Ultrafine Intermediate Fine Primary Ultrafine Intermediate Fine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ball mills and tube mills with flint or porcelain balls are used for size reduction of Non-metallic ores Rubber Asbestos Limestone Non-metallic ores Rubber Asbestos Limestone ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the selectivity index, if the grade of tailings & concentrate is the same? ∞ 1 0.5 ∞ 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The value of 'angle of nip' is generally about 52° 64° 16° 32° 52° 64° 16° 32° ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rod mills employed for grinding Is useful for handling sticky materials Employ steel rods of 2-12 cms diameter extending over full length of the mill Employ a steel shell having L/D ratio of 1.5 to 3.0 All of these Is useful for handling sticky materials Employ steel rods of 2-12 cms diameter extending over full length of the mill Employ a steel shell having L/D ratio of 1.5 to 3.0 All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS