Mechanical Operations Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. Non-metallic ores Asbestos & mica Metalliferrous ores Basic slags Non-metallic ores Asbestos & mica Metalliferrous ores Basic slags ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations There is practically no alternative/competitor to __________ in the beneficiation treatment of sulphide ores. Classification Jigging Froth floatation Tabling Classification Jigging Froth floatation Tabling ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The reduction ratio for grinders is defined as(where, Df and Dp are average diameters of feed and product respectively). Dp/Df Df - Dp Df/Dp None of these Dp/Df Df - Dp Df/Dp None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The main differentiation factor between tube mill and ball mill is the Size of the grinding media Operating speed Final product size Length to diameter ratio Size of the grinding media Operating speed Final product size Length to diameter ratio ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is used for primary crushing of very hard lumpy materials? Toothed roll crusher Ball mill Tube mill Gyratory crusher Toothed roll crusher Ball mill Tube mill Gyratory crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy consumed by a ball mill depends on Its ball load Its speed All of these The density of the material being ground Its ball load Its speed All of these The density of the material being ground ANSWER DOWNLOAD EXAMIANS APP
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