For spheres, the specific surface shape factor is given by

Mechanical Operations
For spheres, the specific surface shape factor is given by

√(AD/V)

A/V

D/V

AD/V

√(AD/V)

A/V

D/V

AD/V

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Mechanical Operations
Pick out the wrong statement pertaining to the turbine agitator.

Generally, the diameter of the agitator is kept between l/3rd to l/6th of the tank diameter while the blade length is l/4th of agitator diameter (with central disc, it is l/8th of the agitator diamete

Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow

Turbine agitator should be located at a height not less than one agitator diameter length from the bottom. If the depth of liquid in the tank is more than twice the agitator diameter, two agitators sh

Recommended peripheral speed for the turbine agitator is 200-250 metres/minute

Generally, the diameter of the agitator is kept between l/3rd to l/6th of the tank diameter while the blade length is l/4th of agitator diameter (with central disc, it is l/8th of the agitator diamete

Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow

Turbine agitator should be located at a height not less than one agitator diameter length from the bottom. If the depth of liquid in the tank is more than twice the agitator diameter, two agitators sh

Recommended peripheral speed for the turbine agitator is 200-250 metres/minute

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Mechanical Operations
In case of a revolving mill, wet grinding compared to dry grinding

Requires more energy

Has less capacity

None of these

Complicates handling & classification of the product

Requires more energy

Has less capacity

None of these

Complicates handling & classification of the product

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Mechanical Operations
Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its

Easier grindability

None of these

High power consumption in grinding

Poor grindability

Easier grindability

None of these

High power consumption in grinding

Poor grindability

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Mechanical Operations
The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m³)

3.6 AVS/ρ

3.6 A.S. ρ

3.6 AVS.ρ

3.6 A.V.ρ

3.6 AVS/ρ

3.6 A.S. ρ

3.6 AVS.ρ

3.6 A.V.ρ

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Mechanical Operations
As per Taggart's formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms )

93 LS

250 LS

√LS

LS

93 LS

250 LS

√LS

LS

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Mechanical Operations

Mechanical Operations For spheres, the specific surface shape factor is given by

Mechanical Operations Pick out the wrong statement pertaining to the turbine agitator.

Mechanical Operations In case of a revolving mill, wet grinding compared to dry grinding

Mechanical Operations Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its

Mechanical Operations The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m³)

Mechanical Operations As per Taggart's formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms )

Mechanical Operations
For spheres, the specific surface shape factor is given by

Mechanical Operations
Pick out the wrong statement pertaining to the turbine agitator.

Mechanical Operations
In case of a revolving mill, wet grinding compared to dry grinding

Mechanical Operations
Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its

Mechanical Operations
The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m³)

Mechanical Operations
As per Taggart's formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms )