# Water Resources and Irrigation Engineering MCQ Questions and Answers

Irrigation Water Resources Engineering Multiple choice Questions and Answers,  Prepare Top Interview Questions and Answers for Civil Engineering Interview Questions, Mechanical Engineering Interview Questions, Electrical Engineering Interview Questions, Online preparation tests for Engineering Students. Latest Water Resources and Irrigation Engineering Questions and Answers for competitive exam preparation for freshers and experienced.

1. Which of the following methods of applying water may be used on rolling land? Free flooding is the correct answer.

2. The value of Sodium Absorption Ratio for high sodium water lies between

A. 0 to 10

B. 10 to 18

C. 18 to 26

D. 26 to 34

3. Optimum depth of kor watering for rice is

4. Irrigation water having the concentration of Na++, Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as

5. The duty is the largest

6. The "outlet discharge factor" is the duty at the head of

7. The kor depth for rice is 190 mm and the kor period is 14 days. The outlet factor for this will be

8. For supplying water to rabi crop, Kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of

9. The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as

10. The water utilizable by plants is available in soils mainly in the form of

11. The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called

12. With the increase in the quantity of water supplied, the yield of most crops

13. Hydrograph is the graphical representation of

14. Infiltration rate is always

15. The depth of water required to bring the soil moisture content of a given soil up to its field capacity is called

16. Infiltration capacity

17. Infiltration is the

18.    If the intensity of rainfall is more than the infiltration capacity of the soil, then the infiltration rate will be

19. Cyclonic precipitation is caused by the lifting of an air mass due to

20. Which of the following is a non-recording rain gauge?

21. A rain gauge should preferably be fixed

22. Which of the following types of rain gauges is used for measuring rain in remote hilly inaccessible areas?

23. Rate of evaporation from a water surface increases if

24. A 70% index of wetness means

25.    Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation?

26.    Assertion A: To estimate the rainfall over a catchment, the number of rain gauges required per unit area is large for hilly areas.

Reason R: Rainfall gradient is steep. Select your correct answer according to the coding system given below :

27. When the surface of transpiration is submerged underwater, then potential evapotranspiration is

28.    Unit of runoff in M.K.S. system is

29.    The runoff increases with

30.  The area between the isohyets 45 cm and 55 cm is 100 square km and between 55 cm and 65 cm is 150 square km. The average depth of annual! precipitation over the above basin of 250 square km will be

31.    A current meter is used to measure the

32.    If it rains between 2 P.M. and 3 P.M. and the entire basin area just starts contributing water at 3 P.M. to the outlet, then the time of concentration will be

33. The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be

34. The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three stations A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be

35.    The best unit duration of the storm for a unit hydrograph is

36.    The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by

37.    The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of

38.    S-hydrograph is used to obtain unit hydrograph of

39.    The relation between probability (P) and recurrence interval (T) is given by

40.    Dimensions of coefficient of transmissibility are

41.    If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by

42.    An artesian aquifer is the one where

43.   A deep well

44.    A multipurpose reservoir is one that is

45.    The useful storage is the volume of water stored in the reservoir between

46.    The water stored in the reservoir below the minimum pool level is called

47.    For a flood control reservoir, the effective storage is equal to

48.    Trap efficiency of a reservoir is a function of

49.  The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metres per year, then the usefulness of the reservoir will start reducing after

50.    The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition, are