Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

Mechanical Operations
Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

German standard screens (DIN 1171) etc

All of these

American standard screens (ASTM and Tyler standard screens)

British standard screens

German standard screens (DIN 1171) etc

All of these

American standard screens (ASTM and Tyler standard screens)

British standard screens

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Mechanical Operations
During filtration operation, the filtrate encounters the resistance of the

All of these

Channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium

Cake

Filter medium

All of these

Channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium

Cake

Filter medium

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Mechanical Operations
Carbon black is pulverised in a

Ball mill

Gyratory crusher

Roll crusher

Hammer crusher

Ball mill

Gyratory crusher

Roll crusher

Hammer crusher

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Mechanical Operations
The sphericity of a cylinder of 1 mm diameter and length 3 mm is

0.6

0.9

0.78

0.5

0.6

0.9

0.78

0.5

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Mechanical Operations
Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?

None of these

Kick's law

Rittinger's law

Bond's crushing law

None of these

Kick's law

Rittinger's law

Bond's crushing law

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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 . 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)

½w² . R² . ρL

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Mechanical Operations

Mechanical Operations Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

Mechanical Operations During filtration operation, the filtrate encounters the resistance of the

Mechanical Operations Carbon black is pulverised in a

Mechanical Operations The sphericity of a cylinder of 1 mm diameter and length 3 mm is

Mechanical Operations Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?

Mechanical Operations
Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

Mechanical Operations
During filtration operation, the filtrate encounters the resistance of the

Mechanical Operations
Carbon black is pulverised in a

Mechanical Operations
The sphericity of a cylinder of 1 mm diameter and length 3 mm is

Mechanical Operations
Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?