Mechanical Operations Separation of isotopes is generally done using a/an __________ centrifuge. Disk-bowl Neither A nor B Both A & B Ultra Disk-bowl Neither A nor B Both A & B Ultra ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following mineral dressing operations is termed as 'comminution'? Tabling Panning None of these Spiralling Tabling Panning None of these Spiralling ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the __________ filtration. Varying rate Constant pressure Varying pressure Constant rate Varying rate Constant pressure Varying pressure Constant rate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Balls for ball mills are never made of Alloy steel Forged/cast steel Cast iron Lead Alloy steel Forged/cast steel Cast iron Lead ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A compressible cake has the Maximum porosity at the filter medium None of these Maximum porosity at the upstream side Same porosity throughout the cake thickness Maximum porosity at the filter medium None of these Maximum porosity at the upstream side Same porosity throughout the cake thickness 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 . δρL (2R + δ) ½w² . R . ρL(R + 2δ) ½w² . R² . ρL ½w² . δ² . ρL ½w² . δρL (2R + δ) ½w² . R . ρL(R + 2δ) ANSWER DOWNLOAD EXAMIANS APP
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