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Mechanical Operations

Mechanical Operations
For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is

460
230
1125
2250

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Mechanical Operations
Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm)

0.01 L.S
L.S
L.S/0.087
0.087 L.S

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Mechanical Operations
The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle).

6/D.p
2/D.p
12/D.p
4/D.p

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Mechanical Operations
Which of the follwoing mechanical conveyors does not come under the division 'scrapers'?

Flight conveyor
Ribbon conveyor
Bucket elevators
Drag conveyor

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Mechanical Operations
In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced.

Tailing
Middling
Concentrate
None of these

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Mechanical Operations
Which of the following conveyors cannot be recommended for transportation of abrasive materials?

Belt conveyor
Flight conveyor
Chain conveyor
Apron conveyor

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