Irrigation Engineering

31. F.S.L. of a canal at its head with respect to parent channel is kept

1. At the same level
2. 15 cm lower
3. 15 cm higher
4. None of these

View answer

32. Finally formed berms in canals are provided for

1. Protection of banks erosion by the waves
2. Control of seepage losses
3. Strengthening of banks
4. All the above

View answer

33. For a standing crop, the consumptive use of water is equal to the depth of water

1. Transpired by the crop
2. Evaporated by the crop
3. Transpired and evaporated by the crop
4. Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil

View answer

34. For a unique design of a channel by Kennedy's theory

1. Its breadth must only be known
2. Its depth must only be known
3. Its breadth and depth ratio must only be known
4. All the above

View answer

35. For cereal crops the most commonly adopted method of irrigation, is

1. Free flowing method
2. Check method
3. Furrow method
4. Sprinkling method

View answer

36. For designing the venturi head,

1. Width of the throat should not be less than one-third of the bed width of main canal
2. Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
3. Minimum throat width should not be less than 60 cm
4. All the above

View answer

37. For diversion of flood water of rivers, the type of canal constructed, is

1. Ridge canal
2. Perennial canal
3. Inundation canal
4. Canal

View answer

38. For smooth entry of water in a canal, the angle between head regulator and water is generally kept

1. 80°
2. 90°
3. 110°
4. 120°

View answer

39. For standing crops in undulating sandy fields, the best method of irrigation, is

1. Sprinkler irrigation
2. Free flooding
3. Check method
4. Furrow method

View answer

40. For the conditions enumerated to provide a crossing at C₁ You will probably provide

1. An aqueduct
2. A super-passage
3. A syphon aqueduct
4. None of these

View answer