11. Horizontal slicing method applied if seam thickness is A. More than 15m B. Less than 10m C. More than 10m D. Less than 15m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
12. The type of sinking employed in unstable friable strata with heavy rush of water A. Cementation B. Freezing C. Piling D. Cassoin Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
13. Seam thickness more than 8m and regular dip <60°, strong roof and floor, no self heating with easily cavable roof. Select best method. A. Transverse slicing in descending order B. Horizontal slicing C. Diagonal slicing D. Inclined slicing in ascending order Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
14. The cut coal is loaded by . . . . . . . . In case of shear. A. Bull plate B. Dozer ptate C. Wing plate D. Bell plate Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
15. The groove made by coal cutting machine is called A. Cut hole B. Web C. Chamber hole D. Sumpad earter Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
16. On the mixing cone, there is a screen to prevent pebbles larger than . . . . . . . . mm size from getting into shaft range with sand water mixing. A. 10mm B. 15mm C. 20mm D. 25mm Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
17. Hangers placed at intervals of A. 1m B. 1.2m C. 1.5m D. 2m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
18. The power available in under ground at a voltage of A. 100V B. 110V C. $$\frac{{440}}{{550V}}$$ D. 220v olts Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
19. The coal mining areas where the maximum drilling depth is upto A. 500m B. 1000m C. 1500m D. 3000m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
20. In longwall face cut by double back shuffle, can be only worked with A. Plough B. DERD C. Fixed drum shearer D. SERD Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
