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MCQs

Total Questions : 94 | Page 7 of 10 pages
Question 61. The seepage pressure always acts _______
  1.    in the direction of flow
  2.    opposite to direction of flow
  3.    perpendicular to direction of flow
  4.    tangential to direction of flow
 Discuss Question
Answer: Option A. -> in the direction of flow
Answer: (a).in the direction of flow
Question 62. The effective pressure subjected to seepage pressure is given by _______
  1.    σ’=zγsat*izγw
  2.    σ’=zγ’*izγw
  3.    σ’=zγ’±izγw
  4.    σ’=zγ’/izγw
 Discuss Question
Answer: Option C. -> σ’=zγ’±izγw
Answer: (c).σ’=zγ’±izγw
Question 63. The quick condition takes place when effective pressure is _______
  1.    σ’=0
  2.    σ’=1
  3.    σ’= zγ’+ pₛ
  4.    σ’= zγ’
 Discuss Question
Answer: Option A. -> σ’=0
Answer: (a).σ’=0
Question 64. In ______ direction of flow, the effective pressure is increased.
  1.    perpendicular
  2.    tangential
  3.    upward
  4.    downward
 Discuss Question
Answer: Option D. -> downward
Answer: (d).downward
Question 65. The critical hydraulic gradient is given by _______
  1.    ic = γ’/ γw
  2.    ic = γ’+ γw
  3.    ic = γ’-γw
  4.    ic = γ’
 Discuss Question
Answer: Option A. -> ic = γ’/ γw
Answer: (a).ic = γ’/ γw
Question 66. The critical hydraulic gradient ic in terms of specific gravity G and voids ratio e is given by ______
  1.    Ge
  2.    G/e
  3.    \(\frac{G-1}{1+e}\)
  4.    \(\frac{G+1}{1-e}\)
 Discuss Question
Answer: Option C. -> \(\frac{G-1}{1+e}\)
Answer: (c).\(\frac{G-1}{1+e}\)
Question 67. A coarse-grained soil has a voids ratio of 0.66 and specific gravity G of 2.65. What will be its critical hydraulic gradient?
  1.    0.99
  2.    0.88
  3.    0.77
  4.    0.66
 Discuss Question
Answer: Option A. -> 0.99
Answer: (a).0.99
Question 68. If a soil has a submerged unit weight of 10.69 kN/m³, what will be its critical hydraulic gradient?
  1.    1.09
  2.    0.88
  3.    1.77
  4.    1.66
 Discuss Question
Answer: Option A. -> 1.09
Answer: (a).1.09
Question 69. The critical hydraulic gradient ic is unity when the specific gravity G=2.67 and voids ratio e is ______
  1.    0.67
  2.    0.33
  3.    0.43
  4.    0.80
 Discuss Question
Answer: Option A. -> 0.67
Answer: (a).0.67
Question 70. Calculate the height of water table rise in soil mass from a sand stratum of 12m deep from ground level, at which the effective pressure is zero. The water percolates through a soil mass of thickness 5m. The γsat=18.6 kN/m³ and γw=9.81 kN/m³.
  1.    7.68m
  2.    9.48m
  3.    5.24m
  4.    10m
 Discuss Question
Answer: Option B. -> 9.48m
Answer: (b).9.48m

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