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Mechanical Operations

Mechanical Operations
The distribution given by microscopic analysis of powder is

Volume
Number
Length
Area

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Mechanical Operations
Shell and leaf filter as compared to plate and frame filter

Provides more effective washing
Entails less labor cost
All of these
Facilitates filtration under higher pressure

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Mechanical Operations
Run of mine (ROM) coal is crushed by a __________ for use in domestic ovens.

Hammer crusher
Jaw crusher
Ball mill
Tube mill

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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 A.V.ρ
3.6 AVS/ρ

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Mechanical Operations
Rittinger number which designates the new surface prduced per unit of mechanical energy absorbed by the material being crushed, depends on the

State or manner of application of the crushing force
Elastic constant of the material
All of these
Ultimate strength of the material

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Mechanical Operations
Angle of nip of the crushing rolls does not depend upon the

Diameter of the rolls
Product size
Speed of the rolls
Feed size

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