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Mechanical Operations

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

S
1/S
√S
S²

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Mechanical Operations
For transporting pasty material, one will use a/an

Belt conveyor
Apron conveyor
Bucket elevator
Screw colaveyor

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Mechanical Operations
Screw conveyors are

Run at very high rpm
All of these
Suitable for sticky materials
Suitable for highly abrasive materials

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Mechanical Operations
Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a __________ conveyor.

Slat or drag
Ribbon
Flight
Screw

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Mechanical Operations
The specific cake resistance for compressible sludges is a function of the pressure drop

Over cake
None of these
Overall
Over medium

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Mechanical Operations
__________ balls capable of grinding the feed in a ball mill gives the maximum efficiency.

Elliptical
Cast iron
Minimum size
Maximum size

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