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MCQs

Total Questions : 96 | Page 10 of 10 pages
Question 91. Which type of weir is suitable for hard clay and consolidated gravel foundations?
  1.    Gravity weir
  2.    Non-gravity weir
  3.    Masonry weir with a vertical drop
  4.    Rock-fill weirs with sloping aprons
 Discuss Question
Answer: Option C. -> Masonry weir with a vertical drop
Answer: (c).Masonry weir with a vertical drop
Question 92. Heave piping may occur on the _______________
  1.    downstream of sheet pile or cut off wall
  2.    upstream of sheet pile or cut off wall
  3.    body of earth structure
  4.    below the foundation
 Discuss Question
Answer: Option A. -> downstream of sheet pile or cut off wall
Answer: (a).downstream of sheet pile or cut off wall
Question 93. The safety of a hydraulic structure founded on a pervious foundation can be ensured by:
i. Provision sufficient length of its concrete floor.
ii. Providing sufficient depth of its concrete floor.
iii. Provision a downstream cutoff of some reasonable depth.
  1.    i and ii
  2.    i and iii
  3.    i, ii and iii
  4.    ii and iii
 Discuss Question
Answer: Option C. -> i, ii and iii
Answer: (c).i, ii and iii
Question 94. Backward erosion piping takes place when the phreatic line cuts the downstream face of the dam and seepage pressure is high.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 95. What is the value of Bligh’s coefficient for coarse-grained soil?
  1.    15
  2.    12
  3.    5 to 9
  4.    8
 Discuss Question
Answer: Option B. -> 12
Answer: (b).12
Question 96. For sand mixed with boulder and gravel and for loam soil, the safe hydraulic gradient should be ___________
  1.    1/15
  2.    1/12
  3.    1/5 to 1/9
  4.    1/8
 Discuss Question
Answer: Option C. -> 1/5 to 1/9
Answer: (c).1/5 to 1/9

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