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Mechanical Operations

Mechanical Operations
Which of the following must be stored in silos and not in open yard?

High V.M. bituminous coal
Sand
None of these
Coke breeze

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Mechanical Operations
Soft & non-abrasive materials can be made into fines by

None of these
Cutting
Attrition
Compression

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

Cast iron
Wooden plank
Stainless steel
High speed steel

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Mechanical Operations
A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is

0.6
None of these
0.1
0.4

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Mechanical Operations
increasing the capacity of a screen __________ the screen effectiveness.

None of these
Does not effect
Increases
Decreases

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Mechanical Operations
Width and speed of a conveyor belt depends upon the __________ of the material.

Lump size
Bulk density
Neither A nor B
Both A & B

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