Tunnel Engineering Objective Type Questions Practice - Set 01

Practice Test: Question Set - 01

1. Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?
    (A) Stone masonry
    (B) Timber
    (C) Cast iron
    (D) Cement concrete

2. Drift method of tunneling is used to construct tunnels in
    (A) Soft grounds
    (B) Rock
    (C) Self supporting grounds
    (D) Broken grounds

3. Assertion A: When rock conditions are favorable, it will not be necessary to take up concrete lining concurrently with the driving operations till the full length of the tunnel has been driven through rock.
Reason R: A tunnel through rock, hard or soft, does not need any concrete lining
Select your answer based on the coding system given below:
    (A) Both A and R is true and R is the correct explanation of A
    (B) Both A and R is true but R is not the correct explanation of A
    (C) A is true but R is false
    (D) A is false but R is true

4. Which one of the following tunneling methods is used for laying underground sewers?
    (A) Needle beam method
    (B) Army method
    (C) German method
    (D) Italian method

5. 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

6. As compared to a single free face, if a charge of explosive is placed equidistant from two faces, then the yield
    (A) Remain same
    (B) Decreases
    (C) Increases by 2.25 times
    (D) Increases by 3.5 times

7. 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

8. Which of the following is not a component of the shield?
    (A) Propelling jacks
    (B) Liner plate
    (C) Hood
    (D) Tail

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

10. Consider the following situations.
  1. 1. Soil is soft.
  2. Volume of existing surface traffic on the alignment is heavy.
  3. Track is at a deeper level.
  4. Water table is high.
In the construction of Metro Railways, “Cut and Cover” method of construction is suitable in situations listed at
    (A) 1 and 2
    (B) 1 and 3
    (C) 1 and 4
    (D) 2 and 3

11. Which one of the following is a component of a shield for tunneling?
    (A) Liner plate
    (B) Trench jack
    (C) Stiffener
    (D) Cutting edge

12. Which of the following are percussion drills?
    (i) Shot drill
    (ii) Diamond drill
    (iii) Wagon drill
    (iv) Churn drill
Of these statements
    (A) (i) and (ii) are correct
    (B) (iii) and (iv) are correct
    (C) (i) and (iv) are correct
    (D) (ii) and (iii) are correct

13. 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

14. Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?
    (A) It is suitable for construction in unstable rocks
    (B) In this method, it is easy to install timber support
    (C) Tunneling can be continuous and the work can be expedited
    (D) In case of excessive water, it is easy to take correct steps

15. 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

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