Mechanical Operations

Cyclones are used primarily for separating_________________?

Byadmin February 18, 2019August 23, 2021

Cyclones are used primarily for separating_________________?

A. Solids
B. Solids from fluids
C. Liquids
D. Solids from solids

Mechanical Operations

Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is________________?

Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is________________?

A. > 10
B. < 10
C. > 100
D. < 100

Read More Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is________________?
Mechanical Operations

Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?

Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?

A. Impact
B. Roll
C. Vibratory
D. None of these

Read More Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?
Mechanical Operations

For raschig rings, the sphericity is_____________________?

For raschig rings, the sphericity is_____________________?

A. 0.5
B. 1
C. < 1
D. √3

Read More For raschig rings, the sphericity is_____________________?
Mechanical Operations

Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called__________________?

Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called__________________?

A. Classification
B. Sedimentation
C. Clarification
D. Decantation

Read More Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called__________________?
Mechanical Operations

Use of grinding aids results in the ___________________?

Use of grinding aids results in the ___________________?

A. Enhanced production rate
B. Finer products
C. Both A. & B.
D. Neither A. nor B.

Read More Use of grinding aids results in the ___________________?
Mechanical Operations

Addition of filter aid to the slurry before filtration is done to _______________ of the cake?

Addition of filter aid to the slurry before filtration is done to _______________ of the cake?

A. Increase the porosity
B. Increase the compressibility co-efficient
C. Decrease the porosity
D. Decrease the compressibility co-efficient

Read More Addition of filter aid to the slurry before filtration is done to _______________ of the cake?

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