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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
The term 'angle of nip' is concerned with the operation of the __________ crushers.

Roll
None of these
Jaw
Gyratory

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Mechanical Operations
Grinding efficiency of a ball mill is of the order of __________ percent.

40-50
75-80
90-95
43835

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Mechanical Operations
In a size reduction crushing operation, feed size is 300 to 1500 mm while the product size is 100 to 300 mm. This is a case of the __________ crushing.

Secondary
Ultrafine
Fine
Primary

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Mechanical Operations
__________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution.

Banbery
Muller
Rubbon blender
Tumbler

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Mechanical Operations
During agitation of liquids, power consumption during laminar flow is not proportional to the

Density of the liquid
Square of rotational speed
Viscosity of the liquid
Cube of impeller diameters

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