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.Management Sciences
A. 2 m
B. 3 m
C. 4 m
D. 5 m
Related Mcqs:
- A good blast with a good yield is obtained if the cut hole is___________________?
- A. normal to face B. inclined at 45° to the face C. inclined at 15° to the face D. inclined at 30° to the face...
- Drifters can be used to drill_________________?
- A. only up holes B. only down holes C. horizontal or up holes D. horizor„al, down or up holes...
- The correct sequence of drilling equipment for increasing size of holes in tunnels is________________?
- A. wagon drill, churn drill, shot drill B. wagon drill, shot drill, churn drill C. shot drill, churn drill, wagon drill D. churn drill, wagon drill, shot drill...
- Drift method of tunnelling is used to construct tunnels in__________________?
- A. soft grounds B. rock C. self supporting grounds D. broken grounds...
- Which of the following is not a component of the shield ?
- A. propelling jacks B. liner plate C. hood D. tail...
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