During size reduction by a jaw crusher, the energy consumed decreases with the__________________?
Correct answer: C. Increasing size of feed at constant reduction ratio
- A. Decreasing size of product at constant size of feed
- B. Decreasing machine capacity
- C. Increasing size of feed at constant reduction ratio
- D. None of these
Explanation
At a fixed reduction ratio, increasing the feed size produces less new surface area per unit mass, so the specific energy requirement decreases. This gives the increasing-feed-size option.
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