51. Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
52. The sensitivity of a rigid module is
53. In a syphon aqueduct
54. For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is
55. The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than
56. The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is
57. A fall in a canal bed is generally provided, if
58. As compared to gravity dams, earthen dams
59. Bed bars in a canal are provided
60. The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called
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