Mechanical Operations In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill. 50 35 85 70 50 35 85 70 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the __________ crushing. Fine Ultrafine Primary Secondary Fine Ultrafine Primary Secondary 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 Ball mill is used for Coarse grinding Attrition Crushing Fine grinding Coarse grinding Attrition Crushing Fine grinding ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is 1.5 √3 2 √2 1.5 √3 2 √2 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In screen analysis, the notation +5 mm/-10 mm means particles passing through 10 mm screen and retained on 5 mm screen Both 5 mm and 10 mm screens Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen 10 mm screen and retained on 5 mm screen Both 5 mm and 10 mm screens Neither 5 mm nor 10 mm screen 5 mm screen and retained on 10 mm screen ANSWER DOWNLOAD EXAMIANS APP
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