Mechanical Operations

Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation ?

Byadmin February 18, 2019August 22, 2021

Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation ?

A. Check plates
B. Jaw plates
C. Toggles
D. Crush shaft

Mechanical Operations

Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to ____________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance)?

Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to ____________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance)?

A. √μ
B. 1/√μ
C. 1/μ
D. 1/μ2

Read More Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to ____________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance)?
Mechanical Operations

In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of _______________ crushing?

In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of _______________ crushing?

A. Primary
B. Secondary
C. Fine
D. Ultrafine

Read More In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of _______________ crushing?
Mechanical Operations

Sphericity of raschig ring (whose length and diameter are equal) is___________________?

Sphericity of raschig ring (whose length and diameter are equal) is___________________?

A. > 1
B. < 1
C. 1
D. 2

Read More Sphericity of raschig ring (whose length and diameter are equal) is___________________?
Mechanical Operations

Rittinger’s number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger’s number of a material indicates its________________?

Rittinger’s number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger’s number of a material indicates its________________?

A. Easier grindability
B. Poor grindability
C. High power consumption in grinding
D. None of these

Read More Rittinger’s number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger’s number of a material indicates its________________?
Mechanical Operations

For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) ?

For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) ?

A. π = (A/D2)
B. π/6 = (V/D3)
C. AD/V
D. None of these

Read More For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) ?
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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