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Mechanical Operations

Mechanical Operations
Ore concentration by jigging is based on the difference in the __________ of the particles.

Specific gravities
Wettability
None of these
Shape

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Mechanical Operations
__________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials.

Belt
Bucket
Apron
Screw

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Mechanical Operations
The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be

1.34 Wi
0.5 Wi
3.34 Wi
Wi

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Mechanical Operations
Which of the following is a fine crusher?

Gyratory crusher
Dodge jaw crusher
Blake jaw crusher
Toothed roll crusher

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Mechanical Operations
Apron conveyors are used for

None of these
Heavy loads & long runs
Small loads & long runs
Heavy loads & short runs

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Mechanical Operations
For coarse reduction of hard solids, use

Cutting
Impact
Attrition
Compression

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