Herewith below we have shared more than MCQs in Irrigation Engineering of our Civil Engineering subject. This will be very useful to study MCQs in systematic Manner.
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- Answered
- Review
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Question 1 of 138
1. Question
The consumptive use of water for a crop
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Question 2 of 138
2. Question
Canals taken off from ice-fed perennial rivers, are known
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Question 3 of 138
3. Question
In gravity canals, F.S.L. is
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Question 4 of 138
4. Question
The field capacity of a soil is 25%, its permanent wilting point is 15% and specific dry unity weight is 1.5. If the depth of root zone of a crop, is 80 cm, the storage capacity of the soil, is
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Question 5 of 138
5. Question
If water table is comparatively high, the irrigation canal becomes useless, due to
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Question 6 of 138
6. Question
If A is the area of the surface, x is the depth of its C.G. from the surface of the water and u is the density of water, then
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Question 7 of 138
7. Question
In a syphon aqueduct
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Question 8 of 138
8. Question
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation
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Question 9 of 138
9. Question
To hold hydraulic jumps, baffle walls are provided in
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Question 10 of 138
10. Question
Pick up the correct sequence of the part of a canal system from the following
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Question 11 of 138
11. Question
The field capacity of a soil depends upon
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Question 12 of 138
12. Question
The water face of the guide banks, is protected by
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Question 13 of 138
13. Question
Pick up the correct statement from the following
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Question 14 of 138
14. Question
For a unique design of a channel by Kennedy’s theory
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Question 15 of 138
15. Question
The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called
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Question 16 of 138
16. Question
The main cause of silting up a channel,
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Question 17 of 138
17. Question
Pick up the correct statement from the following:
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Question 18 of 138
18. Question
A river training work is generally required when the river is
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Question 19 of 138
19. Question
When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called
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Question 20 of 138
20. Question
Pick up the correct statement from the following
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Question 21 of 138
21. Question
In a Sarda type fall, the rectangular crest, may be used for discharge upto
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Question 22 of 138
22. Question
The measure to remove water logging of land, is
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Question 23 of 138
23. Question
Borrow pits should preferably be located in
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Question 24 of 138
24. Question
The sinuosity of a meander is the ratio of
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Question 25 of 138
25. Question
Pick up the correct statement from the following:
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Question 26 of 138
26. Question
According to Khosla, the exits gradient of surface flow
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Question 27 of 138
27. Question
A hydraulic structure is designed to withstand
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Question 28 of 138
28. Question
If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is
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Question 29 of 138
29. Question
In Montague type fall
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Question 30 of 138
30. Question
Cross regulators in main canals are provided
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Question 31 of 138
31. Question
According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is
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Question 32 of 138
32. Question
According to Lacey, in regime conditions
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Question 33 of 138
33. Question
The most suitable section of a lined canal, is
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Question 34 of 138
34. Question
An outlet is said to be proportional if its flexibility, is
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Question 35 of 138
35. Question
The level of the floor of a syphon aqueduct can be obtained
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Question 36 of 138
36. Question
If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle 0 with horizontal, the hydraulic mean depth is
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Question 37 of 138
37. Question
According to Bligh’s creep theory, percolating water flows along
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Question 38 of 138
38. Question
For a standing crop, the consumptive use of water is equal to the depth of water
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Question 39 of 138
39. Question
Bed bars in a canal are provided
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Question 40 of 138
40. Question
The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to
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Question 41 of 138
41. Question
For the design of major hydraulic structures on the canals, the method generally preferred to, is based on
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Question 42 of 138
42. Question
Pick up the incorrect statement from the following:
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Question 43 of 138
43. Question
Pick up the incorrect statement from the following
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Question 44 of 138
44. Question
Irrigation canals are generally aligned along
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Question 45 of 138
45. Question
In a canal syphon, the flow is
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Question 46 of 138
46. Question
Pick up the correct statement from the following
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Question 47 of 138
47. Question
The main function of a diversion head works of a canal from a river, is
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Question 48 of 138
48. Question
Pick up the correct statement from the following:
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Question 49 of 138
49. Question
If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is
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Question 50 of 138
50. Question
If V0 is the critical velocity of a channel, its silt transporting power, according to Kennedy, is proportional to
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Question 51 of 138
51. Question
Regime conditions in a channel may occur if
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Question 52 of 138
52. Question
A river is said to be of
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Question 53 of 138
53. Question
The ratio of the rate of change of discharge of an outlet and parent channel, is known as
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Question 54 of 138
54. Question
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
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Question 55 of 138
55. Question
Pick up the correct statement from the following:
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Question 56 of 138
56. Question
Lacey’s equation for calculating flood discharge in rivers, is
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Question 57 of 138
57. Question
A deficit of sediments in flowing water may cause a river
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Question 58 of 138
58. Question
Side slopes generally kept for canals in loam soil, are:
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Question 59 of 138
59. Question
For the stability of a structure against seepage pressure according to Khosla’s creep theory, the critical gradient is
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Question 60 of 138
60. Question
If B and d are the bed width and depth of a channel in metres, the combined losses due to evaporation and seepage in cumecs per kilometre length of the channel, is
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Question 61 of 138
61. Question
The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of
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Question 62 of 138
62. Question
The top of the capillary zone
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Question 63 of 138
63. Question
The depth of rice root zone, is
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Question 64 of 138
64. Question
If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is
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Question 65 of 138
65. Question
In a barrage, the crest level is kept
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Question 66 of 138
66. Question
An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as
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Question 67 of 138
67. Question
In case of a trapezoidal notch fall
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Question 68 of 138
68. Question
Finally formed berms in canals are provided for
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Question 69 of 138
69. Question
Process of meandering is due to
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Question 70 of 138
70. Question
The ratio of the rate of change of discharge of an outlet to the rate of change in level of water surface in a distributary at its normal depth, is known as
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Question 71 of 138
71. Question
The ratio of the head recovered to the head put in, is known as
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Question 72 of 138
72. Question
If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by
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Question 73 of 138
73. Question
The scour depth D of a river during flood, may be calculated from the Lacey’s equation
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Question 74 of 138
74. Question
For the conditions enumerated to provide a crossing at C1 You will probably provide
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Question 75 of 138
75. Question
When a canal and a drainage approach each other at the same level, the structure so provided, is
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Question 76 of 138
76. Question
The difference in level between the top of a bank and supply level in a canal, is called
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Question 77 of 138
77. Question
If L is total length of a canal in kilometres, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is
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Question 78 of 138
78. Question
The crest level of a canal diversion head work, depends upon
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Question 79 of 138
79. Question
The most suitable location of a canal head work, is
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Question 80 of 138
80. Question
The length and width of a meander and also the width of the river, vary roughly as
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Question 81 of 138
81. Question
A land is said to be water-logged if its soil pores within
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Question 82 of 138
82. Question
V’ and ‘R are the regime mean velocity and hydraulic mean depth respectively in metres. Lacey’s silt factor ‘f’ is
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Question 83 of 138
83. Question
A counter berm is
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Question 84 of 138
84. Question
While deciding the alignment of a proposed canal taking off from a river at B, three alignments of approximately equal lengths are available. These cross a drainages at C1, C2and C3 where drainage bed levels C1 > C2 > C3, you will provide at site C3
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Question 85 of 138
85. Question
Canals constructed for draining off water from water logged areas, are known
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Question 86 of 138
86. Question
The Lacey’s regime velocity is proportional to
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Question 87 of 138
87. Question
A fall in a canal bed is generally provided, if
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Question 88 of 138
88. Question
If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle 6 with horizontal, the perimeter of the canal is
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Question 89 of 138
89. Question
According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase
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Question 90 of 138
90. Question
F.S.L. of a canal at its head with respect to parent channel is kept
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Question 91 of 138
91. Question
The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept
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Question 92 of 138
92. Question
Bligh’s theory of seepage assumes
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Question 93 of 138
93. Question
If D1 and D2 are depths of water upstream and downstream of a hydraulic jump, the loss of head at the jump, is
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Question 94 of 138
94. Question
Garnett’s diagrams are used for graphical solution of design equations of a canal by
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Question 95 of 138
95. Question
To control the silt entry into a distributary at head regulator, King’s vanes are provided which are the walls
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Question 96 of 138
96. Question
Effective precipitation for a crop may be defined as
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Question 97 of 138
97. Question
If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is
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Question 98 of 138
98. Question
The state of the soil when plants fail to extract sufficient water for their requirements, is
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Question 99 of 138
99. Question
The useful moisture of soil, is equal to its
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Question 100 of 138
100. Question
Groynes are generally built
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Question 101 of 138
101. Question
Useful soil moisture for plant growth, is
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Question 102 of 138
102. Question
A minimum of 90 cm free board is provided if the discharge in the canal is between
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Question 103 of 138
103. Question
According to Kennedy, the critical velocity (V0) in metres in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).
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Question 104 of 138
104. Question
For diversion of flood water of rivers, the type of canal constructed, is
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Question 105 of 138
105. Question
Lane’s weighted creep theory assumes
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Question 106 of 138
106. Question
Solution of Laplacian equation in three dimensions dzф/dx2 + d2ф/dy2 + dzф/dz2 = 0 of water in a syphon, is done by
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Question 107 of 138
107. Question
In north Indian Plains, optimum depth of kor watering for wheat, is
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Question 108 of 138
108. Question
A water-logged land is found suitable for cultivation due to
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Question 109 of 138
109. Question
Attracting groynes are built
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Question 110 of 138
110. Question
The optimum depth of kor watering for a rice crop, is
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Question 111 of 138
111. Question
Which one of the following statements is correct?
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Question 112 of 138
112. Question
For cereal crops the most commonly adopted method of irrigation, is
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Question 113 of 138
113. Question
If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is
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Question 114 of 138
114. Question
The intensity of irrigation means
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Question 115 of 138
115. Question
Retrogression of the bed level of a river downstream a weir, occurs due to
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Question 116 of 138
116. Question
Meandering of a river generally occurs, in
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Question 117 of 138
117. Question
For designing the venturi head,
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Question 118 of 138
118. Question
Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on
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Question 119 of 138
119. Question
In a concrete canal the approximate permissible velocity of water should not exceed
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Question 120 of 138
120. Question
Lacy’s regime condition is obtained if
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Question 121 of 138
121. Question
A hydraulic jump is generally formed when a stream moving with
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Question 122 of 138
122. Question
Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less
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Question 123 of 138
123. Question
The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to
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Question 124 of 138
124. Question
A fall which maintains its depth, is
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Question 125 of 138
125. Question
A current meter measures the velocity of flow, if it is held
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Question 126 of 138
126. Question
The width of a meander belt is the transverse distance between
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Question 127 of 138
127. Question
When a canal is carried over a natural drainage, the structure provided, is known as
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Question 128 of 138
128. Question
For smooth entry of water in a canal, the angle between head regulator and water is generally kept
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Question 129 of 138
129. Question
In rigid module, the discharge
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Question 130 of 138
130. Question
For standing crops in undulating sandy fields, the best method of irrigation, is
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Question 131 of 138
131. Question
The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally
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Question 132 of 138
132. Question
Fundamental momentum equation for a hydraulic jump, is
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Question 133 of 138
133. Question
The uplift pressure on the roof of an inverted syphon, is maximum when
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Question 134 of 138
134. Question
The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is
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Question 135 of 138
135. Question
If A is the depth of water in metres, B is the number of days of base period and D is the duty in hectare/cumec, the relationship which holds good, is
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Question 136 of 138
136. Question
The top soil of a water logged field becomes more alkaline and infertile if its pH value is
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Question 137 of 138
137. Question
If average particle size of the silt in millimetres is m, the Lacey’s silt factor f is proportional to
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Question 138 of 138
138. Question
The sensitivity of a rigid module, is