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Mechanical Operations

Mechanical Operations
The equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 cm will be __________ cms.

2
12
8
20

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Mechanical Operations
__________ is a cohesive solid.

None of these
Wheat
Wet clay
Sand

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Mechanical Operations
Which of the following crushers can be considered as a combination of a jaw crusher and a roller crusher?

Rod mill
Ball mill
Fluid energy mill
Gyratory crusher

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Mechanical Operations
Reciprocal of sphericity is termed as the

Shape factor
Sauter diameter
Surface area per unit mass
Specific surface ratio

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Mechanical Operations
__________ mill is not used for grinding wheat into flour and for milling of cereals & other vegetable products.

Attrition
Buhrstone
Pebble
Roller

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Mechanical Operations
The value of 'angle of nip' is generally about

32°
64°
16°
52°

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