A compressible cake has the_________________?

Byadmin February 18, 2019August 23, 2021

A compressible cake has the_________________?

A. Maximum porosity at the upstream side
B. Maximum porosity at the filter medium
C. Same porosity throughout the cake thickness
D. None of these

Mechanical Operations

Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripheral velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m3 here, V =πND where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) ?

Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripheral velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m3 here, V =πND where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) ?

A. 3.6 V.W.Dr.ρ
B. 3.6 V.W. ρ
C. 3.6 W.Dr.ρ
D. 3.6 V.W.Dr/ρ

Read More Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripheral velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m3 here, V =πND where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) ?
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

Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?

Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?

A. Blake jaw
B. Toothed roll
C. Gyratory
D. None of these

Read More Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?
Mechanical Operations

For efficient grinding, ball mills must be operated__________________?

For efficient grinding, ball mills must be operated__________________?

A. At a speed less than the critical speed
B. At a speed more than the critical speed
C. At a speed equal to the critical speed
D. With minimum possible small balls

Read More For efficient grinding, ball mills must be operated__________________?
Mechanical Operations

The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)__________________?

The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)__________________?

A. ∝ ΔP
B. ∝ 1/ ΔP
C. ∝ √ΔP
D. Independent of ΔP

Read More The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)__________________?
Mechanical Operations

_____________ are mixed using ribbon blenders ?

_____________ are mixed using ribbon blenders ?

A. Lumpy solids and low viscosity liquids
B. Dry powders
C. High viscosity liquids
D. Thick pastes

Read More _____________ are mixed using ribbon blenders ?

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