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Mechanical Operations

Mechanical Operations
Gravity stamp mill is meant for the __________ crushing.

Ultrafine
Fine
Intermediate
Primary

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Mechanical Operations
During the washing of cake

Cake resistance decreases
Filter medium resistance increases
Filter medium resistance decreases
All the resistances are constant

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Mechanical Operations
Which of the following is a fine crusher?

Blake jaw crusher
Gyratory crusher
Toothed roll crusher
Dodge jaw crusher

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Mechanical Operations
Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?

Cube
Raschig rings
Cylinder (L/D = 1)
Sphere

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Mechanical Operations
Temperature of the product during ultrafine grinding

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

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Mechanical Operations
A propeller agitator

Is used for mixing high viscosity pastes
Runs at very slow speed (2 rpm)
All of these
Produces mainly axial flow

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MORE MCQ ON Mechanical Operations

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