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Mechanical Operations

Mechanical Operations
Which is the most suitable conveyor for transportation of sticky material?

Belt conveyor
Apron conveyor
Pneumatic conveyor
Screw conveyor

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Mechanical Operations
Cake resistance is

None of these
Independent of pressure drop
Important in the beginning of filtration
Decreased with the time of filtration

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Mechanical Operations
During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration

At the end of filtration
At the end of filtration, but decreases with time subsequently
When half the filtrate has been obtained
At time zero

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Mechanical Operations
Vibrating screens have capacity in the range of __________ tons/ft² .mm mesh size.

50 to 100
0.2 to 0.8
5 to 25
100 to 250

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Mechanical Operations
Which of the following achieves the least reduction ratio for a given feed size?

Cone crusher
Gyratory crusher
Roll crusher
Jaw crusher

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Mechanical Operations
Filtration rate does not depend upon the

Resistance of the cake & the septum
Pressure drop & area of filtering surface
Properties of the cake & the filtrate
None of these

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