In case of a revolving mill, wet grinding compared to dry grinding__________________?

Byadmin February 18, 2019August 22, 2021

In case of a revolving mill, wet grinding compared to dry grinding__________________?

A. Requires more energy
B. Has less capacity
C. Complicates handling & classification of the product
D. None of these

Mechanical Operations

Which of the following gives the crushing energy required to create new surface ?

Which of the following gives the crushing energy required to create new surface ?

A. Taggarts rule
B. Fick’s law
C. Rittinger’s Law
D. None of these

Read More Which of the following gives the crushing energy required to create new surface ?
Mechanical Operations

Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?

Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?

A. Blake jaw
B. Toothed roll
C. Gyratory
D. None of these

Read More Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?
Mechanical Operations

If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is φs is defined by________________?

If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is φs is defined by________________?

A. φs = 6 Vp/dpsp
B. φs = Vp/dpsp
C. φs = 6 dpSp/Vp
D. φs = dpSp/Vp

Read More If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is φs is defined by________________?
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

For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter D. as_________________?

For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter D. as_________________?

A. d
B. √d
C. d2
D. 1/d

Read More For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter D. as_________________?
Mechanical Operations

In a ball mill, the volume occupied by the balls (when the mill is stopped) is about _______________ percent of the volume of the mill?

In a ball mill, the volume occupied by the balls (when the mill is stopped) is about _______________ percent of the volume of the mill?

A. 35
B. 50
C. 70
D. 85

Read More In a ball mill, the volume occupied by the balls (when the mill is stopped) is about _______________ percent of the volume of the mill?

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