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MCQs

Total Questions : 99 | Page 4 of 10 pages
Question 31. The average velocity of the tube of area a is given by _________
  1.    \(v_{av}=\frac{iγ_w}{8ηπ}a \)
  2.    \(v_{av}=\frac{\frac{iγ_w}{8ηπ}}{a}\)
  3.    \(v_{av}=\frac{iγ_w}{2ηπ}a\)
  4.    \(v_{av}=\frac{\frac{iγ_w}{4ηπ}}{a}\)
 Discuss Question
Answer: Option A. -> \(v_{av}=\frac{iγ_w}{8ηπ}a \)
Answer: (a).\(v_{av}=\frac{iγ_w}{8ηπ}a \)
Question 32. The total quantity of water with respect to the hydraulic gradient flowing through the capillary tube is given by _________
  1.    \( q=\frac{hiγ_w}{4ηL} R^2 \)
  2.    \( q=\frac{hγ_w}{4ηL} R^4/i\)
  3.    \( q=\frac{iγ_w}{8η} π R^2\)
  4.    \( q=\frac{iγ_w}{8η} πR^4\)
 Discuss Question
Answer: Option D. -> \( q=\frac{iγ_w}{8η} πR^4\)
Answer: (d).\( q=\frac{iγ_w}{8η} πR^4\)
Question 33. The hydraulic radius RH of circular tube is given by ________
  1.    RH=R/4
  2.    RH=R/6
  3.    RH=R/2
  4.    RH=R/12
 Discuss Question
Answer: Option C. -> RH=R/2
Answer: (c).RH=R/2
Question 34. The hydraulic radius RH is the ratio of the area of the tube to its volume.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 35. Physical permeability of a soil KP is related to the coefficient of permeability by the equation ___________
  1.    KP=kɳ
  2.    KP=kɳ/γW
  3.    KP=k/ɳ
  4.    KP=k γW
 Discuss Question
Answer: Option B. -> KP=kɳ/γW
Answer: (b).KP=kɳ/γW
Question 36. What is the constant value of a and b in Loudon’s empirical formula “log10(KSs2) = a + bn”?
  1.    1 and 0
  2.    1.515 and 1.365
  3.    1.365 and 1.515
  4.    0 and 1
 Discuss Question
Answer: Option C. -> 1.365 and 1.515
Answer: (c).1.365 and 1.515
Question 37. Loudon’s experiments demonstrated the relationship between _____________
  1.    Permeability and specific surface
  2.    Permeability and grain size
  3.    Permeability and adsorbed water
  4.    Permeability and volume
 Discuss Question
Answer: Option A. -> Permeability and specific surface
Answer: (a).Permeability and specific surface
Question 38. What is the relationship between permeability and viscosity of water?
  1.    Directly proportional
  2.    Inversely proportional
  3.    Both are equal
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Inversely proportional
Answer: (b).Inversely proportional
Question 39. What is the effect of adsorbed water on the permeability of soil?
  1.    Structural arrangement is varied
  2.    Reduced degree of saturation
  3.    Size of the particles is diminished
  4.    Reduces the pore size
 Discuss Question
Answer: Option D. -> Reduces the pore size
Answer: (d).Reduces the pore size
Question 40. What is the approximate value, which can be taken as void ratio occupied by adsorbed water?
  1.    1
  2.    0
  3.    0.1
  4.    10
 Discuss Question
Answer: Option C. -> 0.1
Answer: (c).0.1

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