Water Supply Engineering - Water Supply Engineering objective questions and answers


16.  Perched acquifers generally occur


   A. Below water table

   B. Above water table

   C. In acquicludes

   D. In artesian acquifers


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B. Below water table

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17.  Shrouding essentially provided in


   A. Strainer type wells

   B. Cavity type wells

   C. Slotted type wells

   D. All of the above


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C. Slotted type wells

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18.  The joint used for joining the plain ends of cast iron pipes is


   A. Flanged joint

   B. Socket and spigot joint

   C. Dresser coupling joint

   D. Expansion joint


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C. Dresser coupling joint

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19.  A reflex valve is also known as


   A. Safety valve

   B. Scour valve

   C. Air valve

   D. Check valve


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D. Check valve

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20.  A pipe sunk into the ground to tap the underground water is called


   A. Open well

   B. Tubewell

   C. Artesian-well

   D. Infiltration well


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B. Tubewell

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