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Mechanical Operations

Mechanical Operations
The grinding in a hammer crusher takes place due to the

Impact
Neither A nor B
Attrition
Both A & B

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Mechanical Operations
The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is

18 kWh/ton
25.4 kWh/ton
6.35 kWh/ton
9.0 kWh/ton

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Mechanical Operations
In a roll crusher, both the rolls

Run either at the same or different speeds
All of these
Are rotated towards each other
Have the same diameter

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Mechanical Operations
Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )

D
D2.5
1/D
1/D2.5

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Mechanical Operations
__________ is the most suitable for compounding rubber and plastic solids.

Charge can mixer
Pug mill
Pan mixer
Banbery mixer

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Mechanical Operations
A fluid energy mill is used for

Ultra grinding
Grinding
Crushing
Cutting

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