Tunnel Engineering Objective Study Materials - Set 03 - ObjectiveBooks

Tunnel Engineering Objective Study Materials - Set 03

Practice Test: Question Set - 03

1. Drifters can be used to drill
    (A) Only up holes
    (B) Only down holes
    (C) Horizontal or up holes
    (D) Horizontal down or up holes

2. Circular section of tunnels is not suitable for
    (A) Carrying water
    (B) Non-cohesive soils
    (C) Tunnels driven by shield method
    (D) Placement of concrete lining

3. A tunnel is found more advantageous as compared to the alternate routes because it:
    (A) Remains free from snow
    (B) Reduces the cost by reducing the route distance
    (C) Reduces the maintenance cost
    (D) All the above

4. Which one of the following statements is not correct for heading and benching method of tunnelling?
    (A) Drilling and mucking can be done simultaneously
    (B) Benching provides a platform for working on heading
    (C) Removal of muck from the heading is very easy
    (D) None of these

5. Pick up the mechanical ventilation method used for tunnels from the following:
    (A) Blowing fresh air by ducts to the face of tunnel
    (B) Exhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnel
    (C) Blowing fresh air and exhausting foul air by ducts
    (D) All the above

6. For initial surveys of tunnels, the following activities are involved:
  1. Marking portal point with concrete pillars on the ground
  2. Marking tunnel obligatory points on the topographical maps
  3. Preliminary setting of the tunnel on the topographical Survey of India maps
  4. Driving lines between the fixed obligatory points
The correct sequence of the activities is:
    (A) 3, 2, 4, 1
    (B) 1, 2, 3, 4
    (C) 4, 3, 1, 2
    (D) 2, 4, 3, 1

7. Which one of the following methods is generally adopted for tunnelling in firm ground
    (A) Full face method
    (B) Top heading and benching method
    (C) Drift method
    (D) All the above

8. Which one of the following methods is adopted for permanent drainage of tunnels?
    (A) Provision of longitudinal drains
    (B) Continuous open drains
    (C) Concrete lining
    (D) All the above

9. The needle beam method of tunnelling
    (i) Is suitable for soils in which roof can stand for few minutes without support
    (ii) Is suitable for brick lining
    (iii) Is suitable for concrete lining
    (iv) Requires large number of trench jacks
    Of these statements
    (A) Only (i) is correct
    (B) (i), (ii) and (iv) are correct
    (C) (i), (iii) and (iv) are correct
    (D) (i) and (ii) are correct

10. If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are
    (A) 2N
    (B) N + 2
    (C) 2N + 1
    (D) 2N + 2

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