Mechanical Operations

For classification of potable (drinking) water, we use a _______________ filter?

Byadmin February 18, 2019August 23, 2021

For classification of potable (drinking) water, we use a _______________ filter?

A. Gravity sand
B. Plate and frame
C. Vacuum leaf
D. Rotary vacuum

Mechanical Operations

Carbon black is pulverised in a_______________?

Carbon black is pulverised in a_______________?

A. Hammer crusher
B. Ball mill
C. Roll crusher
D. Gyratory crusher

Read More Carbon black is pulverised in a_______________?
Mechanical Operations

The unit of filter medium resistance is________________?

The unit of filter medium resistance is________________?

A. cm-1
B. gm/cm-1
C. cm/gm-1
D. gm-1

Read More The unit of filter medium resistance is________________?
Mechanical Operations

The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m3 of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m3 of filtrate to be produced? Neglect filter medium resistance, Rm; assume incompressible cake ?

The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m3 of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m3 of filtrate to be produced? Neglect filter medium resistance, Rm; assume incompressible cake ?

A. 10
B. 20
C. 25
D. 30

Read More The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m3 of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m3 of filtrate to be produced? Neglect filter medium resistance, Rm; assume incompressible cake ?
Mechanical Operations

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

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

Read More The specific cake resistance for compressible sludges is a function of the pressure drop__________________?
Mechanical Operations

Mass flow of granular solid (M) through a circular opening of dia, D follows_____________________?

Mass flow of granular solid (M) through a circular opening of dia, D follows_____________________?

A. M ∝ √D
B. M ∝ D2
C. M ∝ D3
D. M ∝ D

Read More Mass flow of granular solid (M) through a circular opening of dia, D follows_____________________?
Mechanical Operations

Which of the following is a pressure filter ?

Which of the following is a pressure filter ?

A. Leaf filter (Moore filter)
B. Plate and flame filter
C. Rotary drum filter
D. Sand filter

Read More Which of the following is a pressure filter ?

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