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Mechanical Operations

Mechanical Operations
__________ mills are termed as disintegrators.

Pebble
Cage
Compartment
All of these

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Mechanical Operations
Shell and leaf filter as compared to plate and frame filter

Provides more effective washing
All of these
Entails less labor cost
Facilitates filtration under higher pressure

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Mechanical Operations
The critical speed of a trommel (N) is related to its dia (D) as

N ∝ D
N ∝ 1/√D
N ∝ √D
N ∝ 1/D

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Mechanical Operations
Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill.

None of these
Vibratory
Roll
Impact

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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 )

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

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

16°
32°
64°
52°

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