In the cyclone separator used for separation of dust from dust laden gas, the gas ?

Byadmin February 18, 2019August 22, 2021

In the cyclone separator used for separation of dust from dust laden gas, the gas ?

A. Enters the cyclone from the top
B. Is admitted tangentially at high velocity
C. Develops a helical motion inside the chamber
D. Both B. and C.

Mechanical Operations

For raschig rings, the sphericity is_____________________?

For raschig rings, the sphericity is_____________________?

A. 0.5
B. 1
C. < 1
D. √3

Read More For raschig rings, the sphericity is_____________________?
Mechanical Operations

The process opposite to ‘dispersion’ is termed as the___________________?

The process opposite to ‘dispersion’ is termed as the___________________?

A. Flocculation
B. Sedimentation
C. Filtration
D. None of these

Read More The process opposite to ‘dispersion’ is termed as the___________________?
Mechanical Operations

Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?

Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?

A. kW. sec/kg
B. kWh/kg
C. kWh/sec. kg
D. kg/sec

Read More Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?
Mechanical Operations

Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill.) ?

Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill.) ?

A. D
B. 1/D
C. D2.5
D. 1/D2.5

Read More Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill.) ?
Mechanical Operations

Chance process is used for the________________?

Chance process is used for the________________?

A. Cleaning of coal
B. Concentration of iron ore
C. Concentration of pyrites
D. Water treatment

Read More Chance process is used for the________________?
Mechanical Operations

Bucket elevators are not suitable for the vertical lifting of __________ materials?

Bucket elevators are not suitable for the vertical lifting of __________ materials?

A. Fine (e.g. – 200 mesh size coal)
B. Sticky (e.g. clay paste)
C. Small lumpy (e.g. grains and sand)
D. Free flowing

Read More Bucket elevators are not suitable for the vertical lifting of __________ materials?

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