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MCQs

Total Questions : 203 | Page 3 of 21 pages
Question 21. High pressure grouting is generally restored for concreting in the lining if the rock strata is:
  1.    Highly fissured
  2.    Poor
  3.    Likely to get seepage of water
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 22. The cut of a tunnel face is shown in given figure. This is called
  1.    Michigan cut
  2.    Burn cut
  3.    Fan cut
  4.    Horizontal cut
 Discuss Question
Answer: Option A. -> Michigan cut
Question 23. The following operations are required for tunnelling in rocky terrain: 1.Removing the foul gases2.Marking the tunnel profile3.Setting up and drilling4.Checking misfire5.MuckingThe correct sequence is:
  1.    1, 2, 3, 4, 5
  2.    2, 3, 5, 4, 1
  3.    4, 2, 1, 3, 5
  4.    2, 3, 1, 4, 5
 Discuss Question
Answer: Option D. -> 2, 3, 1, 4, 5
Question 24. The length of the needle beam used in needle beam method of tunnelling is usually
  1.    2 m to 4 m
  2.    2.5 m to 6 m
  3.    4 m to 7 m
  4.    5 m to 6 m
 Discuss Question
Answer: Option D. -> 5 m to 6 m
Question 25. Railway tunnels are generally
  1.    Polycentric
  2.    Rectangular
  3.    Parabolic
  4.    Circular
 Discuss Question
Answer: Option A. -> Polycentric
Question 26. The method of draining in the tunnels, is generally known as
  1.    Foredrainage
  2.    Dewatering
  3.    Permanent drainage
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 27. In the wooded bulk-head, used for mucking in steep grade tunnels,
  1.    One opening is provided
  2.    Two openings are provided
  3.    Three openings are provided
  4.    No opening is provided
 Discuss Question
Answer: Option B. -> Two openings are provided
Question 28. Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than
  1.    2 m
  2.    3 m
  3.    4 m
  4.    5 m
 Discuss Question
Answer: Option B. -> 3 m
Question 29. For B.G. single track railway, the height of the tunnel above top of rails should be
  1.    5.5 m to 5.8 m
  2.    5.8 m to 6.2 m
  3.    6.7 m to 7.3 m
  4.    7.3 m to 7.5 m
 Discuss Question
Answer: Option C. -> 6.7 m to 7.3 m
Question 30. A good blast with a good yield is obtained if the cut hole is
  1.    Normal to face
  2.    Inclined at 45° to the face
  3.    Inclined at 15° to the face
  4.    Inclined at 30° to the face
 Discuss Question
Answer: Option B. -> Inclined at 45° to the face

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