Longwall Mining MCQ Questions - Part 03
31. Which of the following is an equipment used alongside shearer in Longwall mining?
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Answer: A. Armoured Face Conveyor (AFC)
32. What is the typical panel width in Longwall mining?
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Answer: B. 150–400 m
33. Longwall top coal caving is more suitable for seam thickness:
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Answer: C. > 4.5 m
34. Which is the primary cutting principle of Longwall plough?
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Answer: D. Scrapping action
35. The main gate and tail gate are driven for:
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Answer: D. All of the above
36. The normal shearer cutting speed in Longwall mining is:
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Answer: A. 1–2 m/min
37. The goaf area in Longwall mining refers to:
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Answer: B. Caved out area behind supports
38. The main advantage of retreat Longwall over advancing Longwall is:
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Answer: A. Better roof control
39. The hydraulic fluid used in powered supports is generally:
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Answer: A. Water-emulsion type
40. The face advance rate in Longwall depends mainly on:
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Answer: D. All of the above
41. What is meant by 'weighting' in Longwall mining?
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Answer: A. Roof load coming on supports
42. Periodic weighting in Longwall mining indicates:
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Answer: A. Regular heavy loads on supports
43. Which of the following is NOT a Longwall equipment?
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Answer: C. Dragline
44. The gas most commonly associated with Longwall faces is:
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Answer: B. Methane
45. Longwall mining is most economical when:
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Answer: A. Seam is thick & uniform
📚 Longwall Mining MCQ Series
"This series of questions has been designed to develop a deeper understanding of Longwall Mining and to aid in effective examination preparation.” ✅
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