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Mechanical Operations

Mechanical Operations
Length/diameter ratio of a ball mill is

1
< 1
1.5
> 1

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Mechanical Operations
Gummy & sticky materials like molasses, sugar etc. are best transported/handled by using a __________ conveyor.

Slat
Ribbon
Screw
Drag

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Mechanical Operations
In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill.

35
85
50
70

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Mechanical Operations
Which of the following is a fine crusher?

Gyratory crusher
Blake jaw crusher
Dodge jaw crusher
Toothed roll crusher

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

Rotary vacuum
Plate and frame
Vacuum leaf
Gravity sand

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Mechanical Operations
Which of the following is not a wet classifier?

None of these
Sharpies supercentrifuge
Hydrocyclones
Dorr Oliver rake classifier

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