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Mechanical Operations

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

Arithmetic
Volume-surface
Geometric
Mass

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Mechanical Operations
Which of the following is a coarse crusher?

Tube mill
Smooth roll crusher
Toothed roll crusher
Gyratory crusher

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Mechanical Operations
Reciprocal of sphericity is termed as the

Specific surface ratio
Shape factor
Surface area per unit mass
Sauter diameter

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Mechanical Operations
The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is

2
√2
√3
1.5

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Mechanical Operations
Crushing efficiency of a machine ranges between __________ percent.

50 to 70
0.1 to 2
20 to 25
5 to 10

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Mechanical Operations
Dry powdery solid materials are transported by a __________ conveyor.

Belt
Screw
None of these
Bucket

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