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MCQs

Total Questions : 83 | Page 7 of 9 pages
Question 61. The most widely used type of a deep state tube well in India is __________
  1.    cavity well
  2.    strainer tube well
  3.    slotted pipe gravel packed tube well
  4.    both cavity and strainer tube well
 Discuss Question
Answer: Option B. -> strainer tube well
Answer: (b).strainer tube well
Question 62. Which of the following tubewell is suitable when a deep bearing stratum lies below an impervious layer and water contribution can take place through bottom only?
  1.    Strainer type tubewell
  2.    Abyssinian tubewell
  3.    Cavity type tubewell
  4.    Slotted type tubewell
 Discuss Question
Answer: Option C. -> Cavity type tubewell
Answer: (c).Cavity type tubewell
Question 63. The general average yield from standard tube wells is of order of____________
  1.    5 L/sec
  2.    50 L/sec
  3.    500 L/sec
  4.    5000 L/sec
 Discuss Question
Answer: Option B. -> 50 L/sec
Answer: (b).50 L/sec
Question 64. In cavity tubewell, there is a possibility of water tapping through sides and the flow is radial.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 65. What is the measure of the fineness of an aquifer?
  1.    Average grain size
  2.    Effective diameter
  3.    Mean particle size
  4.    Uniformity coefficient
 Discuss Question
Answer: Option B. -> Effective diameter
Answer: (b).Effective diameter
Question 66. Bored tube wells in rocky consolidated formations as are encountered in the South Indian States of our country are usually drilled by _____________
  1.    rotary drilling rigs
  2.    percussion drilling rigs
  3.    down the hole hammer (DTH) rigs
  4.    cable method of drilling
 Discuss Question
Answer: Option C. -> down the hole hammer (DTH) rigs
Answer: (c).down the hole hammer (DTH) rigs
Question 67. Which of the following drilling method is unsuitable in loose formations such as unconsolidated sand and gravel or quicksand?
  1.    Percussion drilling
  2.    Wash boring method
  3.    Rotary boring method
  4.    Reverse rotary method
 Discuss Question
Answer: Option A. -> Percussion drilling
Answer: (a).Percussion drilling
Question 68. Which is the fastest method of drilling and especially useful in unconsolidated formations?
  1.    Cable tool method
  2.    Water-jet boring method
  3.    Hydraulic Rotary method
  4.    Reverse Rotary method
 Discuss Question
Answer: Option C. -> Hydraulic Rotary method
Answer: (c).Hydraulic Rotary method
Question 69. Which drilling method is best suited for underground formations made of gravel, sand and clayey deposits?
  1.    Percussion drilling
  2.    Wash boring method
  3.    Rotary boring method
  4.    Reverse rotary method
 Discuss Question
Answer: Option B. -> Wash boring method
Answer: (b).Wash boring method
Question 70. A household tube well is called Abyssinian tube well falls under _________
  1.    strainer type
  2.    cavity type
  3.    slotted type
  4.    both cavity and slotted type
 Discuss Question
Answer: Option A. -> strainer type
Answer: (a).strainer type

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