Mechanical Operations

The specific cake resistance for compressible sludges is a function of the pressure drop__________________?

Byadmin February 18, 2019August 22, 2021

The specific cake resistance for compressible sludges is a function of the pressure drop__________________?

A. Over cake
B. Over medium
C. Overall
D. None of these

Mechanical Operations

In a mixer, the quantity, (v. L/D) is termed as __________ number (where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing) ?

In a mixer, the quantity, (v. L/D) is termed as __________ number (where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing) ?

A. Weber
B. Peclet
C. Brinkman
D. Schmidt

Read More In a mixer, the quantity, (v. L/D) is termed as __________ number (where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing) ?
Mechanical Operations

The inlet pressure in a constant rate filtration____________________?

The inlet pressure in a constant rate filtration____________________?

A. Increases continuously
B. Decreases gradually
C. Remains constant
D. None of these

Read More The inlet pressure in a constant rate filtration____________________?
Mechanical Operations

A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?

A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?

A. 0.50
B. 0.58
C. 0.68
D. 0.62

Read More A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?
Mechanical Operations

Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ρ = bulk density of material, kg/m3) ?

Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ρ = bulk density of material, kg/m3) ?

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

Read More Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ρ = bulk density of material, kg/m3) ?
Mechanical Operations

Width and speed of a conveyor belt depends upon the ______________ of the material?

Width and speed of a conveyor belt depends upon the ______________ of the material?

A. Lump size
B. Bulk density
C. Both A. & B.
D. Neither A. nor B.

Read More Width and speed of a conveyor belt depends upon the ______________ of the material?
Mechanical Operations

Trommels employ _____________ for screening of materials?

Trommels employ _____________ for screening of materials?

A. Fibrous cloth
B. Woven wire screen
C. Punched plate
D. None of these

Read More Trommels employ _____________ for screening of materials?

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