Mechanical Operations
__________ centrifuge is normally used in sugar mills.

Suspended batch basket
Disc-bowl
Tubular bowl
Perforated horizontal basket continuous

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Mechanical Operations
For a non-spherical particle, the sphericity

Has the dimension of length
Is always less than 1
Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle
Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle

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Mechanical Operations
Pick out the wrong statement pertaining to the roll crushers.

Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced
Both the rolls run necessarily at the same speed
For hard material's crushing, the reduction ratio should not exceed 4
Maximum feed size determines the required roll diameter

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