Mechanical Operations

Which of the following mineral dressing operations is termed as ‘comminution’?

Byadmin February 18, 2019August 22, 2021

Which of the following mineral dressing operations is termed as ‘comminution’?

A. Panning
B. Spiralling
C. Tabling
D. None of these

Mechanical Operations

Mixing of plastic solids is generally facilitated by___________________?

Mixing of plastic solids is generally facilitated by___________________?

A. Dispersion
B. Mastication
C. Kneading
D. None of these

Read More Mixing of plastic solids is generally facilitated by___________________?
Mechanical Operations

Which of the following conveyors cannot be recommended for transportation of abrasive materials ?

Which of the following conveyors cannot be recommended for transportation of abrasive materials ?

A. Belt conveyor
B. Apron conveyor
C. Flight conveyor
D. Chain conveyor

Read More Which of the following conveyors cannot be recommended for transportation of abrasive materials ?
Mechanical Operations

Crushing efficiency of a machine ranges between __________________ percent?

Crushing efficiency of a machine ranges between __________________ percent?

A. 0.1 to 2
B. 5 to 10
C. 20 to 25
D. 50 to 70

Read More Crushing efficiency of a machine ranges between __________________ percent?
Mechanical Operations

As per Taggart’s formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms) ?

As per Taggart’s formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms) ?

A. LS
B. 93 LS
C. 250 LS
D. √(LS)

Read More As per Taggart’s formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms) ?
Mechanical Operations

To get a fine talc powder from its granules, the equipment used is____________________?

To get a fine talc powder from its granules, the equipment used is____________________?

A. Roller crusher
B. Ball mill
C. Jaw crusher
D. Gyratory crusher

Read More To get a fine talc powder from its granules, the equipment used is____________________?
Mechanical Operations

With increase in the capacity of screens, the screen effectiveness__________________?

With increase in the capacity of screens, the screen effectiveness__________________?

A. Remains unchanged
B. Increases
C. Decreases
D. Decreases exponentially

Read More With increase in the capacity of screens, the screen effectiveness__________________?

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