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Mechanical Operations

Mechanical Operations
200 mesh screen means 200 openings per

Inch²
Inch
Cm²
Cm

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

Jaw crusher
Ball mill
Tube mill
Hammer crusher

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Mechanical Operations
For classification of potable (drinking) water, we use a __________ filter.

Vacuum leaf
Rotary vacuum
Gravity sand
Plate and frame

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Mechanical Operations
Filtration should be stopped in a filter press, if the

Both A & B
Liquor stops flowing out to the discharge
Filtration pressure rises suddenly
Cake becomes very dense

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

Flight conveyor
Bucket elevators
Ribbon conveyor
Drag conveyor

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Mechanical Operations
__________ mills are termed as impactors.

Hammer
Rolling-compression
Cage
None of these

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