Discussion
Consider the following pairs of conveyor and its characteristic strength:
Belt conveyor - Long horizontal runs at low power per tonne
Bucket elevator - Vertical lift at high capacity
Pneumatic conveyor - Flexible routing in any direction
Screw conveyor - Very low product damage
How many of the pairs given above are correctly matched?
Answer: D
Correct answer: Only three
Three pairs are right. A belt conveyor excels at long horizontal runs with low power per tonne; a bucket elevator at vertical lift with high capacity; and a pneumatic conveyor at flexible routing, since the pipe can go anywhere.
The fourth is wrong. A screw conveyor causes high product damage, dragging the material against the trough along the whole run. Its strengths are compactness, enclosure and low cost, not gentleness - a belt is far kinder to the product.
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