Under-feed stokers work best for _________ coals high in volatile matter and with caking tendency?
Correct answer: C. semibituminous and bituminous
- A. anthracite
- B. lignite
- C. semibituminous and bituminous
Explanation
Underfeed stokers are suitable for semibituminous and bituminous coals because these coals contain relatively high volatile matter and can form a suitable caking fuel bed. Anthracite has low volatile matter, while lignite has different moisture and combustion characteristics.
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