⚙️ Mine Machinery MCQ Questions - Part 04
46. The primary purpose of haulage loaders in mines is:
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Answer: A. Load, carry and dump materials
47. A dragline excavator is used mainly for:
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Answer: A. Surface excavation
48. DGMS safety regulation mandates that all electrical mining machines must be:
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Answer: C. Both A and B
49. The main power supply for underground machinery is generally:
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Answer: B. Electric supply through trailing cables
50. The daily maintenance check for all mining machinery should include:
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Answer: A. Lubrication, inspection and cleaning
51. Safety devices on underground machinery include:
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Answer: D. All of the above
52. The procedure after replacing a haulage rope includes:
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Answer: A. Lubricating and testing the rope
53. According to DGMS, who is responsible for machinery safety in mines?
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Answer: B. Manager and Supervisor
54. The risk of electrical hazards in underground mines is controlled by:
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Answer: D. All of the above
55. The typical warranty period for mining machinery is:
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Answer: B. 1 year
56. Maintenance records for mine machinery must be:
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Answer: B. Maintained and produced upon request
57. In excavators, the boom is used for:
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Answer: A. Supporting the bucket
58. The life expectancy of a typical dragline excavator is:
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Answer: C. 25-30 years
59. A key indicator of machine performance is:
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Answer: D. All of the above
60. The main safety standard for mining machinery is governed by:
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Answer: D. Both A and B
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