50 Best Irrigation Water Resources Engineering Multiple choice Questions and Answers pdf

50 Latest Water Resources and Irrigation Engineering Questions and Answers for competitive exam preparation for freshers and experienced pdf

1. Which of the following methods of applying water may be used on rolling land ?
2. The value of Sodium Absorption Ratio for high sodium water lies between
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 largest
6.    The "outlet discharge factor" is the duty at the head of
7.    The kor depth for rice is 190 mm and 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 upto 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 soil, then the infiltration rate will be
19.   Cyclonic precipitation is caused by lifting of an air mass due to
20.    Which of the following is a non-recording raingauge ?
21.    A raingauge 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 raingauges 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 surface of transpiration is submerged under water, 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 annua! 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 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 station 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 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 the one which 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 metre 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

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