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. 35 85 50 70 35 85 50 70 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is used for primary crushing of very hard lumpy materials? Toothed roll crusher Tube mill Ball mill Gyratory crusher Toothed roll crusher Tube mill Ball mill Gyratory crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filter medium resistance is important during the __________ of filtration. None of these Final stages Entire process Early stages None of these Final stages Entire process Early stages ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Traces of liquid tar fog present in coke oven gas is separated using Strainer None of these Electrostatic precipitator Cyclone separator Strainer None of these Electrostatic precipitator Cyclone separator ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. Asbestos & mica Basic slags Metalliferrous ores Non-metallic ores Asbestos & mica Basic slags Metalliferrous ores Non-metallic ores ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the Energy needed to crush one ton of feed to 100 microns Energy needed to crush one tonne of feed to 200 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy needed to crush one ton of feed to 100 microns Energy needed to crush one tonne of feed to 200 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen ANSWER DOWNLOAD EXAMIANS APP
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