Mine Machinery MCQ Questions - Part 02 | Indian Minerology

⚙️ Mine Machinery MCQ Questions - Part 02

16. The main function of conveyors in mines is:

• A. Transport materials continuously
• B. Provide ventilation
• C. Drain water
• D. Support roof

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Answer: A. Transport materials continuously

17. The most common type of conveyor used in underground mines is:

• A. Belt conveyor
• B. Chain conveyor
• C. Screw conveyor
• D. Roller conveyor

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Answer: A. Belt conveyor

18. Mine locomotives are mainly powered by:

• A. Steam engines
• B. Compressed air or battery electric
• C. Diesel only
• D. Manual power

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Answer: B. Compressed air or battery electric

19. The safety feature in mine conveyors to prevent overloading is:

• A. Trip switch
• B. Overload clutch
• C. Belt scale
• D. Safety door

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Answer: B. Overload clutch

20. Warning signals for mine haulage should be:

• A. Audible and coded
• B. Visual only
• C. Any sound
• D. Telephone based only

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Answer: A. Audible and coded

21. The device used to automatically stop a conveyor during belt slippage is called:

• A. Slip switch
• B. Emergency stop
• C. Load limiter
• D. Stop cable

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Answer: A. Slip switch

22. DGMS regulations specify that all electrical equipment in gassy mines must be:

• A. Flameproof
• B. Waterproof
• C. Explosion proof
• D. Both A and C

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Answer: D. Both A and C

23. The primary limitation for using diesel locomotives underground is:

• A. Noise
• B. Emission of harmful gases
• C. Speed
• D. Fuel consumption

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Answer: B. Emission of harmful gases

24. The factor of safety for mine haulage ropes as per DGMS is:

• A. 3
• B. 4
• C. 6.5
• D. 8

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Answer: C. 6.5

25. The main advantage of belt conveyor over rope haulage is:

• A. Higher speed and continuous capacity
• B. Lower installation cost
• C. Simplicity
• D. Less maintenance

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Answer: A. Higher speed and continuous capacity

26. Emergency stop cables on conveyors must be:

• A. Easily accessible
• B. Located only at the conveyor head
• C. Kept locked
• D. None of the above

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Answer: A. Easily accessible

27. Which type of conveyor belt is preferred for transporting coal in underground mines?

• A. PVC belt
• B. Rubber belt
• C. Canvas belt
• D. Steel belt

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Answer: B. Rubber belt

28. The main disadvantage of electric locomotives is:

• A. Emissions
• B. Requirement of electric tracks
• C. Noise
• D. Speed limitation

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Answer: B. Requirement of electric tracks

29. For maintenance of belt conveyors, it is essential to check:

• A. Belt tension and alignment
• B. Conveyor speed only
• C. Idler rollers only
• D. Tail pulley only

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Answer: A. Belt tension and alignment

30. Conveyor systems must be fitted with:

• A. Safety guards and emergency stop devices
• B. Only speed control
• C. Automatic cleaning system
• D. Load sensors only

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Answer: A. Safety guards and emergency stop devices

⚙️ Mine Machinery MCQ Series

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