A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
✅ The correct answer is option A.
Tunnel Engineering MCQs
2. 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
✅ The correct answer is option A.
3. Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than_____________________?
A. 2 m
B. 3 m
C. 4 m
D. 5 m
✅ The correct answer is option B.
4. In compressed air tunneling, the volume of free air provided is______________?
A. 6 mJ per second per m2 of face area
B. 6 m3 per minute per m2 of face area
C. 20 m3 per minute per m2 of face area
D. 6 m3 per hour per m2 of face area
✅ The correct answer is option B.
5. Which of the following is not a component of the shield ?
A. propelling jacks
B. liner plate
C. hood
D. tail
✅ The correct answer is option B.
6. If ‘D’ is the diameter of tunnel in meters, then the thickness of lining in mm, as per the empirical formula is given by_________________?
A. 42 D
B. 82 D
C. 104 D
D. 124 D
✅ The correct answer is option B.
7. Drift method of tunnelling is used to construct tunnels in__________________?
A. soft grounds
B. rock
C. self supporting grounds
D. broken grounds
✅ The correct answer is option B.
8. 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
✅ The correct answer is option B.
9. Which of the following methods of tunneling is used for long tunnels at great depths ?
A. Army method
B. Needle beam method
C. Austrian method
D. English method
✅ The correct answer is option C.
10. 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 answer is option D.