11. The stripping ratio for shavel dumper combination is . . . . . . . . A. 1.5 : 1 B. 2 : 1 C. 4 to 5 : 1 D. 10 : 1 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
12. In manual quarry the bench, height usually in hard rock. A. 2 - 3m B. 3m - 4.5m C. 4 - 5.5m D. Less than 3m 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. Shear needs electricity of A. Max voltage of 6.6 KV, AC B. Max voltage of V 1.1 KV AC C. Max voltage of V 2.2 KV DC D. Max voltage of V 3.3 KV AC 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
14. Linear failure or plane failure is due to A. Linear tension B. Tension at two different directions C. Tension at multiple direction D. Over loading of benches 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
15. The mining lease is granted by . . . . . . . . A. Central government B. State government C. Both 1 and 2 D. Local government 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. Gradients of roads in quarries for tyred vehicular traffic should not exceed . . . . . . . . A. 1 in 4 B. 1 in 8 C. 1 in 15 D. 1 in 10 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. The limiting gradient of surface miner. A. 7° B. 5° C. 3° D. 4° 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
18. The shovel used stripping top soil and making shallow cuts and benches upto depth of 3 - 6m is . . . . . . . . A. Dipper shovel B. Pull shovel C. Tractor D. Stripper shovel 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
19. In which mining early extraction is possible with quick return. A. Surface mining B. Long wall C. Horizon D. B.G method 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
20. Where the over burden consists of soft rock which can be conveniently removed by A. Ripper and scraper dozer combination B. Shovel dumper combination C. Surface miner D. Dragline 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
