Mechanical Operations Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. Metalliferrous ores Non-metallic ores Asbestos & mica Basic slags Metalliferrous ores Non-metallic ores Asbestos & mica Basic slags ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ½w² . R² . ρL ½w² . δ² . ρL ½w² . R . ρL(R + 2δ) ½w² . δρL (2R + δ) ½w² . R² . ρL ½w² . δ² . ρL ½w² . R . ρL(R + 2δ) ½w² . δρL (2R + δ) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations As particle size is reduced None of these Screening becomes progressively more difficult Screening becomes progressively easier Capacity and effectiveness of the screen is increased None of these Screening becomes progressively more difficult Screening becomes progressively easier Capacity and effectiveness of the screen is increased ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Basic slag is not ground in Compartment mills Jaw crushers Ball mills Tube mills Compartment mills Jaw crushers Ball mills Tube mills ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. Increases Remains unchanged May increase or decrease; depends on the machine Decreases Increases Remains unchanged May increase or decrease; depends on the machine Decreases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Balls for ball mills are never made of Lead Cast iron Forged/cast steel Alloy steel Lead Cast iron Forged/cast steel Alloy steel ANSWER DOWNLOAD EXAMIANS APP
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