February 2019 | Page 83 of 448 | AnsweringExams.Com

A screen is said to be blinded, when the___________________?

August 22, 2021February 18, 2019 by admin

A screen is said to be blinded, when the___________________?

A. Over-sizes are present in undersize fraction
B. Under-sizes are retained in oversize fraction
C. Screen is plugged with solid particles
D. Screen capacity is abruptly increased

Which of the following may prove unsuitable for filtering volatile liquids ?

August 22, 2021February 18, 2019 by admin

Which of the following may prove unsuitable for filtering volatile liquids ?

A. Pressure filter
B. Gravity filter
C. Centrifugal filter
D. Vacuum filter

The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a __________________?

August 22, 2021February 18, 2019 by admin

The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a __________________?

A. Boundary mixer
B. Propeller agitator
C. Sharpies centrifuge
D. None of these

To remove dirt from the flowing fluid, we use a ____________________?

August 22, 2021February 18, 2019 by admin

To remove dirt from the flowing fluid, we use a ____________________?

A. Coagulant
B. Gravity settler
C. Strains
D. Clarifier

The sphericity of a solid particle of cubical shape is ___________________?

August 22, 2021February 18, 2019 by admin

The sphericity of a solid particle of cubical shape is ___________________?

A. π
B. (π/6)1/3
C. (π/6)1/2
D. π/3

In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the__________________?

August 22, 2021February 18, 2019 by admin

In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the__________________?

A. Square root of the velocity
B. Square of the viscosity
C. Filtration time only
D. Washing time only

Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate) ?

August 22, 2021February 18, 2019 by admin

Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate) ?

A. S
B. 1/R
C. 1/μ
D. All A., B. & C.

Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?

August 22, 2021February 18, 2019 by admin

Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?

A. kW. sec/kg
B. kWh/kg
C. kWh/sec. kg
D. kg/sec

To get ultrafine particles, the equipment used is a _________________?

August 22, 2021February 18, 2019 by admin

To get ultrafine particles, the equipment used is a _________________?

A. Ball mill
B. Rod mill
C. Hammer crusher
D. Fluid energy mill

Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about________________?

August 22, 2021February 18, 2019 by admin

Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about________________?

A. 1 to 2°
B. 2 to 5°
C. 5 to 10°
D. 10 to 15°