Longwall Mining MCQ Questions - Part 03 | Indian Minerology - Indian Minerology

Longwall Mining MCQ Questions - Part 03 | Indian Minerology

Longwall Mining MCQ Questions - Part 03

Longwall Mining MCQ Questions - Part 03

31. Which of the following is an equipment used alongside shearer in Longwall mining?
  • A. Armoured Face Conveyor (AFC)
  • B. Dragline
  • C. Bucket Wheel
  • D. Jackhammer

Show Answer

Answer: A. Armoured Face Conveyor (AFC)
32. What is the typical panel width in Longwall mining?
  • A. 50–100 m
  • B. 150–400 m
  • C. 500–1000 m
  • D. Above 1200 m

Show Answer

Answer: B. 150–400 m
33. Longwall top coal caving is more suitable for seam thickness:
  • A. < 1.5 m
  • B. 2–3 m
  • C. > 4.5 m
  • D. Very thin seams

Show Answer

Answer: C. > 4.5 m
34. Which is the primary cutting principle of Longwall plough?
  • A. Rotary cutting
  • B. Chisel action
  • C. Impact blasting
  • D. Scrapping action

Show Answer

Answer: D. Scrapping action
35. The main gate and tail gate are driven for:
  • A. Panel entry & exit
  • B. Haulage & ventilation
  • C. Power & water supply
  • D. All of the above

Show Answer

Answer: D. All of the above
36. The normal shearer cutting speed in Longwall mining is:
  • A. 1–2 m/min
  • B. 10–20 m/min
  • C. 50–60 m/min
  • D. Over 100 m/min

Show Answer

Answer: A. 1–2 m/min
37. The goaf area in Longwall mining refers to:
  • A. Developed gate road
  • B. Caved out area behind supports
  • C. Fresh panel
  • D. None

Show Answer

Answer: B. Caved out area behind supports
38. The main advantage of retreat Longwall over advancing Longwall is:
  • A. Better roof control
  • B. Faster development
  • C. Simpler ventilation
  • D. None

Show Answer

Answer: A. Better roof control
39. The hydraulic fluid used in powered supports is generally:
  • A. Water-emulsion type
  • B. Pure oil
  • C. Diesel
  • D. None

Show Answer

Answer: A. Water-emulsion type
40. The face advance rate in Longwall depends mainly on:
  • A. Cutting rate of shearer
  • B. Roof conditions
  • C. Availability of supports
  • D. All of the above

Show Answer

Answer: D. All of the above
41. What is meant by 'weighting' in Longwall mining?
  • A. Roof load coming on supports
  • B. Coal weight measurement
  • C. Haulage load
  • D. None

Show Answer

Answer: A. Roof load coming on supports
42. Periodic weighting in Longwall mining indicates:
  • A. Regular heavy loads on supports
  • B. Random failures
  • C. Gas outbursts
  • D. None

Show Answer

Answer: A. Regular heavy loads on supports
43. Which of the following is NOT a Longwall equipment?
  • A. Shearer
  • B. Powered supports
  • C. Dragline
  • D. AFC

Show Answer

Answer: C. Dragline
44. The gas most commonly associated with Longwall faces is:
  • A. Carbon monoxide
  • B. Methane
  • C. Sulphur dioxide
  • D. Oxygen deficiency

Show Answer

Answer: B. Methane
45. Longwall mining is most economical when:
  • A. Seam is thick & uniform
  • B. Seam is highly steep
  • C. Seams are irregular
  • D. Pillar system is better

Show Answer

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.” ✅

⬅️ Previous (Part 02) Next (Part 04) ➡️

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