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Mechanical Operations

Mechanical Operations
Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a __________ conveyor.

Flight
Ribbon
Screw
Slat or drag

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Mechanical Operations
Coal is finally pulverised to 200 mesh size for burning in boilers by a

Ball mill
Roll crusher
Hammer crusher
Gyratory crusher

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Mechanical Operations
__________ mills are termed as disintegrators.

Cage
Pebble
All of these
Compartment

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Mechanical Operations
In paint industries, blending of light paste is done by using a

Masticator
None of these
Charge can mixer
Kneader

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Mechanical Operations
Which of the following gives the crushing energy required to create new surface ?

Fick's law
Rittinger's law
Taggarts rule
None of these

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Mechanical Operations
Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter)

2 D
1.5 D
D
0.5 D

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