Mechanical Operations

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

Byadmin February 18, 2019August 22, 2021

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

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

Mechanical Operations

Tank filter (e.g., Nutsche filter) is___________________?

Tank filter (e.g., Nutsche filter) is___________________?

A. A high pressure filter
B. A continuous filter
C. Used for small scale filtration work
D. A leaf filter

Read More Tank filter (e.g., Nutsche filter) is___________________?
Mechanical Operations

The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?

The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?

A. c/s
B. s/c
C. s . c
D. 1/s . c

Read More The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?
Mechanical Operations

Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?

Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?

A. 200°C and 5 atm
B. 1000°C and 10 atm
C. 500°C and 50 atm
D. 1000°C and 500 atm

Read More Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?
Mechanical Operations

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

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.

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

The most common filter aid is_________________?

The most common filter aid is_________________?

A. Diatomaceous earth
B. Calcium silicate
C. Sodium carbonate
D. Silica gel

Read More The most common filter aid is_________________?
Mechanical Operations

Length/diameter ratio of a ball mill is __________________ ?

Length/diameter ratio of a ball mill is __________________ ?

A. 1.5
B. 1
C. < 1
D. > 1

Read More Length/diameter ratio of a ball mill is __________________ ?

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