Irrigation Engineering Online Test

1. Rate of infiltration determined by infiltrometer is less than the one determined by rainfall simulator.

2. In Lane’s weighted creep theory, he suggested a weightage factor _________

3. What is the correct expression of Horton’s equation?

4. What is the name of the committee appointed by the government on 23-10-1991?

5. When a canal is taken as an example what factor about it causes waterlogging?

6. Which of the following CD works carry drainage over the canal?

7. The specific capacity of a confined well under equilibrium condition and within the working limits of drawdown ______________

8. What is the range of reflection coefficient for close-grained crops?

9. A dam reservoir which is not provided with gate controls on its spillway and other sluices is called ________________

10. Which soil has the least range of conveyance loss according to Etcheverry and Harding?

11. A narrow V-shaped valley indicates the choice of _________________

12. According to Lacey what factor is needed to have a true regime in an artificial channel?

13. A non-vertical arch dam is known as a _______________

14. What is the slope of a throat?

15. The following data gives the value of consumptive uses and effective rainfalls for the periods shown against them for a Jowar crop. Determine NIR of this crop neglecting other losses.

16. CNS material shall be non-swelling with a minimum of ___________

17. Strickler’s formula is only applicable to the flexible boundary channels.

18. The basic mechanism behind the phenomenon of sediment transport is ______________

19. What is the most important physical characteristic of a reservoir?

20. The vertical component of the earthquake wave which produces adverse effects on the stability of a dam when is acting in ____________________

21. Rewhiding the well involves ____________________

22. A siphon spillway in a concrete gravity dam is in the shape of ________________

23. When the TWC lies below the JHC at all discharges, the problem can be solved by which of the following provisions?
i. Constructing a sloping apron above the river bed
ii. Provision of roller bucket type of energy dissipator
iii. Provision of a ski-jump bucket
iv. A sloping apron below the river bed
v. Construction of a subsidiary dam
vi. A sloping apron partly above and partly below the river bed

24. Groundnut is a cash crop but whereas wheat is a food crop.

25. If the salt concentration of the soil water (saturation extract) in milli-mhos/cm is in between 4.5 – 9, then what is the salinity of the soil?

26. When the crest of an ogee spillway is designed to be in accordance with the lower nappe of a free-falling water jet over a duly ventilated sharp-crested weir then theoretically

27. What type of weir does the diagram represent?

28. Which type of non-modular outlet is used in South India?

29. In case of branch canals and distributary channels, the falls are located with consideration to _________________

30. The canal alignment is finalized only after finalizing the CD works.

31. Into how many categories the river training works are classified?

32. Which of the following pipes is used for carrying hot water in the interior of the building?

33. How many types of canal irrigation works are there?

34. Given that, a particular irrigation field has C.C.A as 200 hectares, out which 150 hectares of land is cultivated for rabi season and 100 hectares of land is cultivated for kharif season. What is the intensity of irrigation for each season?

35. Which of the following theory is the most accurate method to design arch?

36. Which of the following statement is not correct about alluvial soils?

37. The flow through the penstocks and pressure conduits is generally ____________________

38. Hydraulic design when used on the permeable foundations, the design is classified into two groups.

39. The proposed masonry arch bridge having the total height of its abutments or piers from top to bottom as H can be proposed to have economical spans each equal to ______

40. Determine the pan evaporation from the following data using the Christiansen method.
Extra-terrestrial radiation in cm = 47.3cm
Coefficient of temperature(C_t) = 1.403
Coefficient for wind velocity (C_w)= 1.2
Coefficient for relative humidity (C_h) = 1
Coefficient for percent of possible sunshine(C_s) = 1.073
Coefficient of elevation(C_e) = 1.014

41. The dredger which excavates sand deposits of a river and discharges the excavated material with water over long distances is called a _________________

42. Superfluous water is also called _______

43. An ogee spillway of a concrete gravity dam having FRL of 328 m and MWL of 340 m is provided with vertical gates between piers erected on the spillway. The effective length of the spillway is 60 m. The discharge through the spillway when gates are opened up to the actual reservoir level of 331.0 m will be_____________

44. In India, the nuclear power generation is about ____________ of the total power generation.

45. In a concrete gravity dam with a vertical upstream face the stabilising force is provided by the ___________________

46. The reservoir capacity cannot exceed the catchment yield.

47. The most economical type of lining is the one which shows ____________

48. Waterlogging is the rise of water table.

49. Determine the volume of water stored in unit area if unit weight of water is 9.8 KN/m³, dry unit of soil is 17 KN/m³, field capacity (F) is 2.35 m², and depth of root zone of the plant is 9 m.

50. What is the formula for limiting height of a gravity dam?