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

17.  Shrouding essentially provided in

   A. Strainer type wells

   B. Cavity type wells

   C. Slotted type wells

   D. All of the above

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

19.  A reflex valve is also known as

   A. Safety valve

   B. Scour valve

   C. Air valve

   D. Check valve

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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