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MCQs

Total Questions : 81 | Page 3 of 9 pages
Question 21. The uniform sub grade support is most important in ___________
  1.    flexible pavement
  2.    semi-flexible pavement
  3.    rigid pavement
  4.    tar pavement
 Discuss Question
Answer: Option C. -> rigid pavement
Answer: (c).rigid pavement
Question 22. The weaving course is also known as _________
  1.    base course
  2.    surfacing
  3.    sub-base
  4.    subgrade
 Discuss Question
Answer: Option B. -> surfacing
Answer: (b).surfacing
Question 23. The wearing course is flexible.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 24. In flexible pavement, _______ sub grade is more essential.
  1.    well – compacted
  2.    poorly-compacted
  3.    low quality
  4.    uniform
 Discuss Question
Answer: Option B. -> poorly-compacted
Answer: (b).poorly-compacted
Question 25. The wearing course of flexible pavement is made of __________
  1.    bituminous materials
  2.    R.C.C
  3.    P.C.C
  4.    OPC
 Discuss Question
Answer: Option A. -> bituminous materials
Answer: (a).bituminous materials
Question 26. The elastic strain ∆ of the subgrade is __________
  1.    \(∆=\frac{p}{E}\left[(2-2μ^2)(a^2+z^2)^\frac{1}{2}-\frac{(1+μ) z^2}{(a^2+z^2)^\frac{1}{2}}+(μ+2μ^2-1)z\right]\)
  2.    \(∆=\frac{p}{2}\left[\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+ \frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\)
  3.    \(∆=\frac{p}{2}\left[1-2μ-\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+ \frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\)
  4.    \(∆=\frac{p}{2}\left[1+2μ-\frac{2(1+μ)z}{(a^2+z^2)^\frac{1}{2}}+ \frac{z^3}{(a^2+z^2)^\frac{3}{2}}\right]\)
 Discuss Question
Answer: Option A. -> \(∆=\frac{p}{E}\left[(2-2μ^2)(a^2+z^2)^\frac{1}{2}-\frac{(1+μ) z^2}{(a^2+z^2)^\frac{1}{2}}+(μ+2μ^2-1)z\right]\)
Answer: (a).\(∆=\frac{p}{E}\left[(2-2μ^2)(a^2+z^2)^\frac{1}{2}-\frac{(1+μ) z^2}{(a^2+z^2)^\frac{1}{2}}+(μ+2μ^2-1)z\right]\)
Question 27. For a Poisson’s ratio of 0.5, the elastic strain ∆ in terms of Boussinesq settlement factor is __________
  1.    \(∆=\frac{pa}{E} F_B\)
  2.    \(∆=\frac{3pa^2}{2E} F_B\)
  3.    \(∆=\frac{a^2}{2E} F_B\)
  4.    \(∆=\frac{pa^2}{2E} F_B\)
 Discuss Question
Answer: Option A. -> \(∆=\frac{pa}{E} F_B\)
Answer: (a).\(∆=\frac{pa}{E} F_B\)
Question 28. For a Poisson’s ratio of 0.5, the elastic strain ∆ is ___________
  1.    \(∆=\frac{3pa^2}{2E} \)
  2.    \(∆=\frac{pa^2}{2E(a^2+z^2)^\frac{1}{2}} \)
  3.    \(∆=\frac{3pa^2}{2E(a^2+z^2)^\frac{1}{2}} \)
  4.    \(∆=\frac{a^2}{2E(a^2+z^2)^\frac{1}{2}} \)
 Discuss Question
Answer: Option C. -> \(∆=\frac{3pa^2}{2E(a^2+z^2)^\frac{1}{2}} \)
Answer: (c).\(∆=\frac{3pa^2}{2E(a^2+z^2)^\frac{1}{2}} \)
Question 29. The Boussinesq settlement factor is given by _______
  1.    \(F_B=\frac{3}{2} \frac{1}{1+(\frac{z}{a})^2}\)
  2.    \(F_B=\frac{3}{2} \frac{1}{(1+(\frac{z}{a})^2)^\frac{5}{2}}\)
  3.    \(F_B=\frac{3}{2} \frac{1}{(1+(\frac{z}{a})^2)^\frac{1}{2}}\)
  4.    \(F_B=\frac{1}{(1+(\frac{z}{a})^2)^\frac{1}{2}}\)
 Discuss Question
Answer: Option C. -> \(F_B=\frac{3}{2} \frac{1}{(1+(\frac{z}{a})^2)^\frac{1}{2}}\)
Answer: (c).\(F_B=\frac{3}{2} \frac{1}{(1+(\frac{z}{a})^2)^\frac{1}{2}}\)
Question 30. If the load is at the surface of subgrade, the Boussinesq settlement factor is given by ________
  1.    1.5
  2.    2
  3.    2.5
  4.    3
 Discuss Question
Answer: Option A. -> 1.5
Answer: (a).1.5

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