41. The shaft should reach nearly . . . . . . . . m below the lowest bed to be worked to acommodates cheese weights of guide ropes.
42. At the inlet of the mine roadway, the dry and wet bulb temperature of air are 38°C and 29°C, respectively. The corresponding temperatures at the outlet are 32°C and 29°C respectively. The process of heat transfer in the air way is described as . . . . . . . .
43. Term mine car used for tubs capacity more than, having ball bearings for mine car.
44. The factors have to be considered before selecting the site of shaft the site.
45. Heavy barriers used at
46. In thick seams the thickness of coal in between.
47. Booster having VOD of
48. The disadvantage of incline is . . . . . . . .
49. The permitted explosive used in underground in solid blasting of all gassy mins.
50. Sometimes a rod or chisel breaks in the drill hole during drilling. Name the device that may be used to catch the broken piece
Read More Section(Drilling and Blasting)
Each Section contains maximum 100 MCQs question on Drilling and Blasting. To get more questions visit other sections.
- Drilling and Blasting - Section 1
- Drilling and Blasting - Section 2
- Drilling and Blasting - Section 4
- Drilling and Blasting - Section 5
- Drilling and Blasting - Section 6
- Drilling and Blasting - Section 7
- Drilling and Blasting - Section 8
- Drilling and Blasting - Section 9
- Drilling and Blasting - Section 10