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Mechanical Operations

Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of „scrappers‟ ?

Mechanical Operations /
Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of „scrappers‟ ?

A. Bucket conveyor
B. Flight conveyor
C. Screw conveyor
D. Both B. and C.

Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of „scrappers‟ ? Read More »

Mechanical Operations

Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them ?

Mechanical Operations /
Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them ?

A. Jaw crusher, Ball mill, Fluid energy mill
B. Ball mill, Jaw crusher, Fluid energy mill
C. Fluid energy mill, Jaw crusher, Ball mill
D. Fluid energy mill, Ball mill, Jaw crusher

Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them ? Read More »

Mechanical Operations

The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the__________________?

Mechanical Operations /
The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the__________________?

A. Venturi atomiser
B. Gravity settling chamber
C. Electro-static precipitator
D. Cyclone separator

The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the__________________? Read More »

Mechanical Operations

According to Bond crushing law, the work required to form particle of size ‘D’ from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively) ?

Mechanical Operations /
According to Bond crushing law, the work required to form particle of size ‘D’ from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively) ?

A. (S/V)p
B. √(S/V)p
C. (S/V)2p
D. (S/V)f

According to Bond crushing law, the work required to form particle of size ‘D’ from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively) ? Read More »

Mechanical Operations