If a force greater than that of gravity is used to separate solids & fluids of different densities, the process is termed as the __________________?

Byadmin February 18, 2019August 22, 2021

If a force greater than that of gravity is used to separate solids & fluids of different densities, the process is termed as the __________________?

A. Sedimentation
B. Flocculation
C. Dispersion
D. Centrifugation

Mechanical Operations

Vertical transportation of materials can be done by a/an_______________?

Vertical transportation of materials can be done by a/an_______________?

A. Apron conveyor
B. Pneumatic conveyor
C. Bucket elevator
D. Both B. & C.

Read More Vertical transportation of materials can be done by a/an_______________?
Mechanical Operations

Shell and leaf filter as compared to plate and frame filter _____________________?

Shell and leaf filter as compared to plate and frame filter _____________________?

A. Entails less labor cost
B. Facilitates filtration under higher pressure
C. Provides more effective washing
D. All A., B. & C.

Read More Shell and leaf filter as compared to plate and frame filter _____________________?
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

Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively) ?

Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively) ?

A. cos α = (dr + dp)/(dr + df)
B. cos α = (dr + df)/(dr + dp)
C. tan α = (dr + dp)/(dr + df)
D. sin α = (dr + dp)/(dr + df)

Read More Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively) ?
Mechanical Operations

The crushed material received for separation is called feed or_________________?

The crushed material received for separation is called feed or_________________?

A. Tailing
B. Heading
C. Concentrate
D. Middling

Read More The crushed material received for separation is called feed or_________________?
Mechanical Operations

Ultracentrifuges running at speeds upto 100000 rpm is normally used for the_____________________?

Ultracentrifuges running at speeds upto 100000 rpm is normally used for the_____________________?

A. Separation of isotopes based on their density or molecular weights difference
B. Concentration of rubber latex
C. Separation of cream from milk
D. Dewaxing of lubricating oil

Read More Ultracentrifuges running at speeds upto 100000 rpm is normally used for the_____________________?

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