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Mechanical Operations

Mechanical Operations
Mixing mechanism employed in a pan mixer is by

Mulling
None of these
Kneading
Dispersion

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Mechanical Operations
Supporting legs of a plate and frame filter is normally made of

High speed steel
Cast iron
Wooden plank
Stainless steel

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Mechanical Operations
What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls?

1
0.66
0.5
2.76

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Mechanical Operations
For sizing of fine materials, the most suitable equipment is a

Vibrating screen
Grizzly
Trommel
Shaking screen

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Mechanical Operations
The opening of a 200 mesh screen (Taylor series) is

0.0047 cm
0.0074 cm
74 mili-microns
0.0074 mm

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Mechanical Operations
Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.

Ribbed
Plane
Either A or B
Curved

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