MCQ Practice on Civil Tunnel Engineering - ObjectiveBooks

MCQ Practice on Civil Tunnel Engineering

Practice Test: Question Set - 06

1. The method of draining in the tunnels, is generally known as
    (A) Foredrainage
    (B) Dewatering
    (C) Permanent drainage
    (D) All of the above

2. For highways, tunnelling is preferred to if the open cut exceeds:
    (A) 10 meters depth
    (B) 15 meters depth
    (C) 20 meters depth
    (D) 25 meters depth

3. Pick up the explosive used for tunnelling in soft rocks from the following:
    (A) Blasting gelatine
    (B) Special gelatine
    (C) Ammonia dynamite
    (D) Semi-gelatine

4. What is the correct sequence of the following events in rock tunnelling?
  1. Marking tunnel profile
  2. Loading explosives and blasting
  3. Checking misfire
  4. Mucking
  5. Removing foul gas
  6. Setting up and drilling
  7. Guniting
     Select the correct answer using the codes given below.
    (A) 1, 6, 5, 3, 4, 2, 7
    (B) 1, 2, 6, 3, 5, 4, 7
    (C) 1, 6, 2, 5, 4, 3, 7
    (D) 1, 6, 2, 5, 3, 4, 7

5. For B.G. single track, the section of the tunnel must have a width
    (A) 4.2 m to 4.5 m
    (B) 4.5 m to 4.8 m
    (C) 4.9 m to 5.5 m
    (D) 5.5 m to 5.8 m

6. The concentration of the dust particles of the size 0.5 to 5 microns adjacent to the working face should not be more than
    (A) 200 particles/cm3
    (B) 250 particles/cm3
    (C) 300 particles/cm3
    (D) 450 particles/cm3

7. To attain the required shape of the tunnel section, we use:
    (A) Easers
    (B) Trimmers
    (C) Cut holes
    (D) Chisels

8. For B.G. single track railway, the height of the tunnel above top of rails should be
    (A) 5.5 m to 5.8 m
    (B) 5.8 m to 6.2 m
    (C) 6.7 m to 7.3 m
    (D) 7.3 m to 7.5 m

9. The following operations are generally employed for tunnelling in hard rock. 
  1. Removing ground water, 
  2. Loading holes and firing the explosive
  3. Setting up and drilling
  4. Grouting and lining
  5. Removing muck
  6. Ventilation and removing explosion dust
The correct sequence is:
    (A) 3, 2, 6, 5, 1, 4
    (B) 3, 4, 6, 1, 5, 2
    (C) 4, 1, 2, 3, 6, 5
    (D) 5, 4, 2, 1, 3, 6

10. Pick up the correct statement regarding drilling a tunnel from the following:
    (A) Holes are drilled by pneumatically operated rock drills
    (B) One drill is required for each 4 to 5 m2 force area
    (C) The diameter of the bore hole at the deepest point should be 6 mm more than the diameter of the cartridge
    (D) All of the above

11. The most commonly adopted pattern of cut holes is:
    (A) Horizontal wedge cut
    (B) Pyramid cut
    (C) Fan cut
    (D) All the above

12. Concrete lining is provided concurrently with the driving operation in case of
    (A) Rock terrain
    (B) Soft rock
    (C) Running soil
    (D) None of these

13. Which one of the following methods is generally used for the layout of the muck-car tracks?
    (A) The grass hopper method
    (B) Passing track method
    (C) The cherry picker
    (D) All the above

14. The tunnels, the artificial underground passages are constructed for:
    (A) Highways
    (B) Railways
    (C) Sewerage
    (D) All the above

15. Pick up the correct statement from the following:
    (A) The topographical maps of the Survey of India are useful in the mountainous region for tunnelling
    (B) The height point on the ridge is fixed with the help of reciprocal ranging
    (C) The accuracy of 1 in 10,000 is required for planimetric control
    (D) All the above

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