Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 0.5 2.76 1 0.66 0.5 2.76 1 0.66 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 Non-metallic ores Metalliferrous ores Asbestos & mica Basic slags Non-metallic ores Metalliferrous ores ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Energy consumed for crushing one ton of material ranges from __________ kWh. 0.01 to 0.1 0.5 to 1.5 2 to 3.5 4 to 5 0.01 to 0.1 0.5 to 1.5 2 to 3.5 4 to 5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Paddle agitator Is suitable for mixing low viscosity liquids Produces axial flow Moves at very high speed None of these Is suitable for mixing low viscosity liquids Produces axial flow Moves at very high speed None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations As particle size is reduced Screening becomes progressively more difficult Capacity and effectiveness of the screen is increased None of these Screening becomes progressively easier Screening becomes progressively more difficult Capacity and effectiveness of the screen is increased None of these Screening becomes progressively easier ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ centrifuge is normally used in sugar mills. Perforated horizontal basket continuous Suspended batch basket Disc-bowl Tubular bowl Perforated horizontal basket continuous Suspended batch basket Disc-bowl Tubular bowl ANSWER DOWNLOAD EXAMIANS APP
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