Mechanical Operations

______________ mean diameter of particles is given by Σ (xi/Dpi ⃗)?

Byadmin February 18, 2019August 22, 2021

______________ mean diameter of particles is given by Σ (xi/Dpi ⃗)?

A. Mass
B. Volume
C. Arithmetic
D. Volume surface

Mechanical Operations

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

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

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

Read More To remove dirt from the flowing fluid, we use a ____________________?
Mechanical Operations

Which of the following is the hardest material ?

Which of the following is the hardest material ?

A. Calcite
B. Quartz
C. Corundum
D. Gypsum

Read More Which of the following is the hardest material ?
Mechanical Operations

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

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

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

What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls ?

What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls ?

A. 0.5
B. 1.0
C. 2.76
D. 0.66

Read More What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls ?
Mechanical Operations

Which of the following is a continuous filter ?

Which of the following is a continuous filter ?

A. Plate and frame filter
B. Cartridge filter
C. Shell and leaf filter
D. None of these

Read More Which of the following is a continuous filter ?
Mechanical Operations

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________________?

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°

Read More 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________________?

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