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Tunnel Engineering MCQ

1.Which of the following is not a component of the shield?

  • APropelling jacks
  • BLiner plate
  • CHood
  • DTail
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Correct Answer : (B)

Liner plate
Explanation:

2.An overhead track on a large truss frame is required in case of car changer by

  • AThe grass hopper method
  • BThe passing track method
  • CCalifornia crossing method
  • DDixon conveyor method
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Correct Answer : (A)

The grass hopper method
Explanation:

3.Pick up the explosive used for tunnelling in soft rocks from the following

  • ABlasting gelatin
  • BSpecial gelatin
  • CAmmonia dynamite
  • DSemi-gelatine
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Correct Answer : (C)

Ammonia dynamite
Explanation:

4.Pick up the mechanical ventilation method used for tunnels from the following

  • ABlowing fresh air by ducts to the face of tunnel
  • BExhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnel
  • CBlowing fresh air and exhausting foul air by ducts
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

5.Which one of the following statements is not correct with regard to heading and henching method of tunnelling?

  • ADriving of tunnel is done in two portions of its section
  • BDriving the top portion is done in advance of the bottom portion
  • CThe holes in head and bench are loaded together with explosive for blasting
  • DFiring of head holes is done just before the bench holes are fired
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Correct Answer : (D)

Firing of head holes is done just before the bench holes are fired
Explanation:

6.Which one of the following statements is not correct for heading and benching method of tunnelling?

  • ADrilling and mucking can be done simultaneously
  • BBenching provides a platform for working on heading
  • CRemoval of muck from the heading is very easy
  • DNone of these
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Correct Answer : (C)

Removal of muck from the heading is very easy
Explanation:

7.Which one of the following methods is generally adopted for tunnelling in firm ground?

  • AFull face method
  • BTop heading and benching method
  • CDrift method
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

8.Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?

  • AIt is suitable for construction in unstable rocks
  • BIn this method, it is easy to install timber support
  • CTunneling can be continuous and the work can be expedited
  • DIn case of excessive water, it is easy to take correct steps
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Correct Answer : (C)

Tunneling can be continuous and the work can be expedited
Explanation:

9.The most commonly adopted pattern of cut holes is

  • AHorizontal wedge cut
  • BPyramid cut
  • CFan cut
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

10.Circular section of tunnels is not suitable for

  • ACarrying water
  • BNon-cohesive soils
  • CTunnels driven by shield method
  • DPlacement of concrete lining
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Correct Answer : (D)

Placement of concrete lining
Explanation:

11.The concentration of the dust particles of the size 0.5 to 5 microns adjacent to the working face should not be more than

  • A200 particles/cm3
  • B250 particles/cm3
  • C300 particles/cm3
  • D450 particles/cm3
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Correct Answer : (D)

450 particles/cm3
Explanation:

12.Which one of the following methods is generally used for the layout of the muck-car tracks?

  • AThe grass hopper method
  • BPassing track method
  • CThe cherry picker
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

13.Which one of the following statements is not correct in respect of setting of an inclined tunnel?

  • AReference points are constructed at every 300 m
  • BThe alignment is fixed from upper/lower apex point
  • CThe level of the invert at the heading is marked by a tape
  • DNone the above
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Correct Answer : (D)

None the above
Explanation:

14.The tunnels, the artificial underground passages are constructed for

  • AHighways
  • BRailways
  • CSewerage
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

15.Drifters can be used to drill

  • AOnly up holes
  • BOnly down holes
  • CHorizontal or up holes
  • DHorizontal down or up holes
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Correct Answer : (D)

Horizontal down or up holes
Explanation:

16.Which of the following methods of tunneling is used for long tunnels at great depths?

  • AArmy method
  • BNeedle beam method
  • CAustrian method
  • DEnglish method
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Correct Answer : (C)

Austrian method
Explanation:

17.Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?

  • AStone masonry
  • BTimber
  • CCast iron
  • DCement concrete
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Correct Answer : (C)

Cast iron
Explanation:

18.In “full face” method of constructing tunnels, the first operation relates to

  • ARemoval of bottom portion
  • BExcavation of one drift in the centre
  • CRemoval of top portion
  • DExcavation being done along the periphery
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Correct Answer : (D)

Excavation being done along the periphery
Explanation:

19.Concrete lining is provided concurrently with the driving operation in case of

  • ARock terrain
  • BSoft rock
  • CRunning soil
  • DNone of these
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Correct Answer : (A)

Rock terrain
Explanation:

20.A tunnel is found more advantageous as compared to the alternate routes because it

  • ARemains free from snow
  • BReduces the cost by reducing the route distance
  • CReduces the maintenance cost
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

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