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Mechanical Operations

Mechanical Operations
For separation of sugar solution from settled out mud, we use a __________ filter.

Sparkler
Rotary drum vaccum
Centrifugal
Plate and frame

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Mechanical Operations
The critical speed of a trommel (N) is related to its dia (D) as

N ∝ D
N ∝ 1/D
N ∝ 1/√D
N ∝ √D

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Mechanical Operations
Size measurement of ultrafine particles can be best expressed in terms of

Micron
Screen size
Centimetre
Surface area per unit mass

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Mechanical Operations
Jigging is a technique by which different particles can be

Separated by particle density
Mixed
Separated by particle shape
Separated by particle size

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Mechanical Operations
Which of the following is a continuous filter?

Cartridge filter
Shell and leaf filter
Plate and frame filter
None of these

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Mechanical Operations
Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a

Batch basket centrifuge
Sharpies supercentrifuge
Sparkler filter
Disc bowl centrifuge

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