Mechanical Operations

Gravity settling process is not involved in the working of a________________?

Byadmin February 18, 2019August 22, 2021

Gravity settling process is not involved in the working of a________________?

A. Hydrocyclone
B. Classifier
C. Dorr-thickener
D. Sedimentation tank

Mechanical Operations

Mixing of plastic solids is generally facilitated by___________________?

Mixing of plastic solids is generally facilitated by___________________?

A. Dispersion
B. Mastication
C. Kneading
D. None of these

Read More Mixing of plastic solids is generally facilitated by___________________?
Mechanical Operations

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

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

A. 6/D.ρ
B. 2/D.ρ
C. 4/D.ρ
D. 12/D.ρ

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

The specific surface of spherical particles is proportional to (where, Dp = diameter of particle)?

The specific surface of spherical particles is proportional to (where, Dp = diameter of particle)?

A. D2
B. Dp
C. 1/Dp
D. 1/D2p

Read More The specific surface of spherical particles is proportional to (where, Dp = diameter of particle)?
Mechanical Operations

The porosity of a compressible cake is _____________________?

The porosity of a compressible cake is _____________________?

A. Minimum at the filter medium
B. Minimum at the upstream face
C. Maximum at the filter medium
D. Same throughout the thickness of cake

Read More The porosity of a compressible cake is _____________________?
Mechanical Operations

As the product becomes finer, the energy required for grinding___________________?

As the product becomes finer, the energy required for grinding___________________?

A. Decreases
B. Increases
C. Is same as for coarser grinding
D. Is 1.5 times that for coarser grinding

Read More As the product becomes finer, the energy required for grinding___________________?
Mechanical Operations

In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

A. Reduction ratio
B. Differential roll speed
C. Both A. and B.
D. Neither A. nor B.

Read More In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

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