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MCQs

Total Questions : 79 | Page 8 of 8 pages
Question 71. Which of the following can be assumed for design purpose of well curb?
  1.    Three point support of cutting edge
  2.    Boulders
  3.    Skin friction
  4.    Steining
 Discuss Question
Answer: Option A. -> Three point support of cutting edge
Answer: (a).Three point support of cutting edge
Question 72. An effective well curb should withstand ___________
  1.    Maximum stress
  2.    Stress due to sand blows
  3.    Its own weight
  4.    Blasting
 Discuss Question
Answer: Option B. -> Stress due to sand blows
Answer: (b).Stress due to sand blows
Question 73. The cutting edge should be provided with an angle of __________
  1.    45°
  2.    60°
  3.    90°
  4.    30°
 Discuss Question
Answer: Option D. -> 30°
Answer: (d).30°
Question 74. A sharp vertical edge for the well is provided at _________
  1.    Inner Face of the well
  2.    Out of the well
  3.    Outside face of the caisson
  4.    All of the mentioned
 Discuss Question
Answer: Option C. -> Outside face of the caisson
Answer: (c).Outside face of the caisson
Question 75. At a given depth, the skin friction of the well is equal to __________
  1.    Diameter of well
  2.    μ times the lateral earth pressure
  3.    Stress condition
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> μ times the lateral earth pressure
Answer: (b).μ times the lateral earth pressure
Question 76. For loose sand, the value of skin friction is between ________
  1.    0.73-2.93
  2.    4.9-19.5
  3.    1.22-3.42
  4.    3.42-6.84
 Discuss Question
Answer: Option C. -> 1.22-3.42
Answer: (c).1.22-3.42
Question 77. The skin friction developed in San Francisco Oakland Bay Bridge, was reduced by, which of the following methods?
  1.    By introducing special equipment
  2.    By coating smooth oil surface
  3.    By decreasing the stress developed
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> By coating smooth oil surface
Answer: (b).By coating smooth oil surface
Question 78. Frictional resistance developed during the sinking the well depends on __________
  1.    Roughness of the surface of contact
  2.    Diameter of the well
  3.    Type of soil
  4.    Lateral earth pressure
 Discuss Question
Answer: Option A. -> Roughness of the surface of contact
Answer: (a).Roughness of the surface of contact
Question 79. The bottom plug is designed in _________ shape.
  1.    Rectangular
  2.    Mushroom
  3.    Bowl-shaped
  4.    Circular
 Discuss Question
Answer: Option C. -> Bowl-shaped
Answer: (c).Bowl-shaped

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