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MCQs

Total Questions : 55 | Page 2 of 6 pages
Question 11. For the use of vacuum method, the D₁₀ should be __________
  1.    1mm
  2.    more than 1mm
  3.    more than 0.5mm
  4.    less than 0.05mm
 Discuss Question
Answer: Option D. -> less than 0.05mm
Answer: (d).less than 0.05mm
Question 12. The suction head ____________ capillary head in vacuum method of dewatering.
  1.    should be greater than
  2.    should be less than
  3.    should be equal to
  4.    does not depend on
 Discuss Question
Answer: Option A. -> should be greater than
Answer: (a).should be greater than
Question 13. In vacuum method, the top of bore hole is sealed by __________
  1.    soil cement
  2.    bentonite
  3.    clay
  4.    soil cement, bentonite and clay
 Discuss Question
Answer: Option D. -> soil cement, bentonite and clay
Answer: (d).soil cement, bentonite and clay
Question 14. For the use of vacuum method, the coefficient of permeability should be __________
  1.    greater than 10¯³cm/s
  2.    in the range 10¯³ to 10¯⁵cm/s
  3.    less than 10¯⁵cm/s
  4.    independent
 Discuss Question
Answer: Option B. -> in the range 10¯³ to 10¯⁵cm/s
Answer: (b).in the range 10¯³ to 10¯⁵cm/s
Question 15. In vacuum method, the ground surface is subjected to unbalanced atmospheric pressure.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 16. What is the minimum depth of water that can be brought to the surface in well point system?
  1.    5m
  2.    2m
  3.    6m
  4.    1m
 Discuss Question
Answer: Option C. -> 6m
Answer: (c).6m
Question 17. For dewatering more than 6m below the water table, which of the following method is used?
  1.    Well point system
  2.    Multi stage well point system
  3.    Vacuum method
  4.    Deep well system
 Discuss Question
Answer: Option B. -> Multi stage well point system
Answer: (b).Multi stage well point system
Question 18. In well point system, ___________should be made essential for proper working of the system.
  1.    Suction pump
  2.    Pumping schedule
  3.    Man power
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Suction pump
Answer: (a).Suction pump
Question 19. A advantage of using jetting of water in well point system is ___________
  1.    Forms a natural filter around well point
  2.    Allows to penetrate soil easily
  3.    Less time is consumed for drilling
  4.    All of the mentioned
 Discuss Question
Answer: Option A. -> Forms a natural filter around well point
Answer: (a).Forms a natural filter around well point
Question 20. The pump which is used for suction of water in the well point system is ___________
  1.    Suction pump
  2.    Auxiliary pump
  3.    Vacuum pump
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> Auxiliary pump
Answer: (b).Auxiliary pump

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