Irrigation Engineering - Irrigation Engineering objective questions and answers

21.  The most suitable location of a canal head work, is

   A. Boulders stage of the river

   B. Delta stage of the river

   C. Rock stage of the river

   D. Through stage of the river

22.  The uplift pressure on the roof of an inverted syphon, is maximum when

   A. Drain is running dry

   B. Canal is running

   C. Canal is running with F.S.L.

   D. Drain is running with H.S.L.

23.  A silt regulator located at the head of a channel, is called

   A. Head extractor

   B. First regulator

   C. Silt-excluder

   D. Silt injector

24.  The ratio of the head recovered to the head put in, is called

   A. Head regained

   B. Efficiency

   C. Sensitivity

   D. Flexibility

25.  The soil moisture useful in the plant growth is

   A. Hygroscopic water

   B. Chemical water

   C. Capillary water

   D. Gravity water

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