General mechanism of size reduction in intermediate and fine grinder is by __________________?
Correct answer: A. Impact and attrition
- A. Impact and attrition
- B. Compression
- C. Compression and tearing
- D. Cutting action
Explanation
Intermediate and fine grinders mainly reduce size through impact, which fractures particles, and attrition, which wears them down by rubbing. Cutting is characteristic of knife cutters, while compression dominates coarse crushing.
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