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Mechanical Operations

Mechanical Operations
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

1
√3
0.5
√2

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Mechanical Operations
Which of the following can be most effectively used for clarification of lube oil and printing ink?

Sharpies supercentrifuge
Sparkler filter
Disc-bowl centrifuge
Precoat filter

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Mechanical Operations
What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls?

46°
16°
40°
32°

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Mechanical Operations
A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for __________ flow of filtrate.

Incompressible cake and turbulent
Compressible cakes and laminar
Incompressible cake and laminar
Compressible cake and turbulent

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Mechanical Operations
Temperature of the product during ultrafine grinding

Decreases
May increase or decrease ; depends on the material being ground
Remains constant
Increases

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Mechanical Operations
Fluid energy mill comes in the category of

Ultrafine grinder
Crusher
Cutter
Grinder

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MORE MCQ ON Mechanical Operations

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