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Mechanical Operations

Mechanical Operations
Out of the following size reduction equipments, the maximum feed size can be accepted by the

Tube mill
Ball mill
Jet pulveriser
Jaw crusher

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Mechanical Operations
Trommels employ __________ for screening of materials.

Fibrous cloth
Woven wire screen
None of these
Punched plate

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Mechanical Operations
During size reduction by a jaw crusher, the energy consumed decreases with the

Increasing size of feed at constant reduction ratio
None of these
Decreasing size of product at constant size of feed
Decreasing machine capacity

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Mechanical Operations
__________ mill is not a revolving mill.

Tube
Cage
Compartment
Pebble

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Mechanical Operations
The unit of filter medium resistance is

Cm⁻¹
Cm/gm⁻¹
Gm⁻¹
Gm/cm⁻¹

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Mechanical Operations
In bag filters, filter fabrics are never made of

Nylon fibres
Polyester fibres
Cotton fibres
Metallic wire woven mesh

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