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‟ ?

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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.

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

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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

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) ?

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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