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Mechanical Operations

Mechanical Operations
Sauter mean diameter is the same as the __________ mean diameter.

Volume-surface
Mass
Geometric
Arithmetic

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Mechanical Operations
Dust laden air can be purified using a

Tubular centrifuge
Gravity settler
Cyclone separator
Bag filter

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Mechanical Operations
Which of the following is the most suitable for handling fibrous and dense slurries?

Propeller agitator
Cone type agitator
Turbine agitator
Radial propeller agitator

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Mechanical Operations
Carbon black is pulverised in a

Roll crusher
Ball mill
Hammer crusher
Gyratory crusher

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Mechanical Operations
Which of the following is not an ultrafine grinder (colloid mill)?

Hammer mills with internal classification
Agitated mills and fluid energy mills
Toothed roll crusher
Micronizers

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Mechanical Operations
According to Taggart's rule for selecting between a gyratory crusher and a jaw crusher; the later should be used, if the hourly tonnage to be crushed divided by the square of the gape expressed in cm is less than

0.184
0.0184
1.84
0.00184

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