GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University
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Subject Code: 2162204
GUJARAT TECHNOLOGICAL UNIVERSITY
Subject Name: Mine Hazards
Time: 02:00 PM TO 04:00 PM
Total Marks: 56
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Subject Code: 2162204
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE- SEMESTER-VI (NEW) EXAMINATION - WINTER 2020Subject Name: Mine Hazards
Time: 02:00 PM TO 04:00 PM
Total Marks: 56
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Instructions:- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q. | MARKS |
|---|---|
| 1. (a) Discuss the different types of classes of fires. | 03 |
| (b) Describe the physical and chemical characteristics of coal liable to spontaneous heating. | 04 |
| (c) Define: Spontaneous Combustion. Describe symptoms of spontaneous heating. | 07 |
| 2. (a) Discuss the factor affecting the limit of explosibility in fire damp. | 03 |
| (b) Describe causes and safety measures in water gas explosion. | 04 |
| (c) List out different types of fire extinguisher. Explain form type fire extinguisher with neat sketch. | 07 |
| 3. (a) Explain how fire can produce in mines and its effect in mines. | 03 |
| (b) Describe the water blast danger and its precautions. | 04 |
| (c) Explain the reason behind underground fires and its preventive measures. | 07 |
| 4. (a) Describe the function of rescue station. | 03 |
| (b) Write note on design and construction of Water Dams. | 04 |
| (c) Explain the reason behind formation of dust in underground mines and their effect on employees. | 07 |
| 5. (a) Describe the various uses of Stone Dust Barriers. | 03 |
| (b) Discuss the different methods for reopening sealed off area in mines. | 04 |
| (c) Explain classification of dust sampling apparatus. Explain any one with neat sketch. | 07 |
| 6. (a) Discuss the sources of initiation of fire damp explosion. | 03 |
| (b) Discuss the difficulties faces during reopening of sealed off area. | 04 |
| (c) Explain rescue and recovery work in connection with mine fire. | 07 |
| 7. (a) Discuss the precautionary measures of Mine Inundation. | 03 |
| (b) Discuss the precautions to be taken while approaching old workings. | 04 |
| (c) Explain the reason behind surface fires and its preventive measures. | 07 |
| 8. (a) Discuss the uses of fire extinguisher. | 03 |
| (b) Discuss the causes and relative inflammability of coal dust explosion. | 04 |
| (c) Explain firefighting organization. | 07 |
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Date: 22/01/2021FirstRanker.com
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