Mechanical Operations

Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?

Byadmin February 18, 2019August 22, 2021

Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?

A. Pug mill
B. Mixer-extruder
C. Banbury mixer
D. Muller mixer

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?
Mechanical Operations

In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

A. Reduction ratio
B. Differential roll speed
C. Both A. and B.
D. Neither A. nor B.

Read More In a roll crusher, the specific power consumption and the production rate is affected by the_________________?
Mechanical Operations

In screen analysis, the notation +5 mm/-10 mm means particles passing through ____________________?

In screen analysis, the notation +5 mm/-10 mm means particles passing through ____________________?

A. 10 mm screen and retained on 5 mm screen
B. 5 mm screen and retained on 10 mm screen
C. Both 5 mm and 10 mm screens
D. Neither 5 mm nor 10 mm screen

Read More In screen analysis, the notation +5 mm/-10 mm means particles passing through ____________________?
Mechanical Operations

Toothed roll crushers achieve size reduction by___________________?

Toothed roll crushers achieve size reduction by___________________?

A. Tearing (shear) and compression
B. Impact and attrition
C. Both A. & B.
D. Neither A. nor B.

Read More Toothed roll crushers achieve size reduction by___________________?
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

Use of grinding aids results in the ___________________?

Use of grinding aids results in the ___________________?

A. Enhanced production rate
B. Finer products
C. Both A. & B.
D. Neither A. nor B.

Read More Use of grinding aids results in the ___________________?

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