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Mechanical Operations

Mechanical Operations
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

0.5
√3
√2
1

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Mechanical Operations
Screen capacity is proportional to (where, S = screen aperture)

1/S
S
√S
S²

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Mechanical Operations
Fick's law relates to

Feed size
None of these
Final particle size
Energy consumption

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Mechanical Operations
Which of the follwoing mechanical conveyors does not come under the division 'scrapers'?

Bucket elevators
Drag conveyor
Ribbon conveyor
Flight conveyor

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Mechanical Operations
Compressibility co-efficient for an absolutely compressible cake is

1
0 to 1
∞

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Mechanical Operations
A screen is said to be blinded, when the

Oversizes are present in undersize fraction
Undersizes are retained in oversize fraction
Screen is plugged with solid particles
Screen capacity is abruptly increased

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