1. Lacey assumed a trapezoidal cross-section of a regime channel
Correct : B. No
2. Lining of a canal
Correct : B. decreases
3. The berms when fully formed
Correct : D. all of the above
4. The smooth entry, the regulators are aligned at an angle of
Correct : C. 110?
5. Irrigation is supplementary to rainfall.
Correct : A. Agree
6. Trough stage of river is most suitable location for diversion head works.
Correct : A. Yes
7. A useful soil moisture for plant growth is
Correct : A. capillary water
8. An outlet in which the discharge depends upon the difference in level between the water levels in distributing channel and the water course, is known as
Correct : A. non-modular outlet
9. The river training works are adopted on a river
Correct : D. all of the above
10. The science which deals with the measurement of water is called hydrometry.
Correct : A. True
11. The gap or margin of height, between full supply level (F.S.L.) and top of the bank is called
Correct : A. free board
12. The optimum depth of kot watering is 19 cm for
Correct : C. rice
13. The width of meandering belt is the
Correct : A. transverse distance between the apex point of one curve and apex point on reverse curve
14. The function of a scouring sluice is
Correct : D. all of the above
15. In case of syphon aqueduct, the H.F.L. of the drain is
Correct : B. much higher above the canal bed
16. A canal head work in rocky stage of a river is not suitable because
Correct : D. all of the above
17. Non-silting, non-scouring velocity is called
Correct : B. critical
18. Sprinklar irrigation is adopted for
Correct : B. uneven
19. In a Sarda type fall, the trapezoidal crest is used for discharges over 14 m3/s.
Correct : A. Correct
20. The flexibility of a sub-proportional outlet is less than one
Correct : A. Yes
21. A part of water which will move out of the soil, if proper drainage is provided, is known as gravitational water.
Correct : A. True
22. In level crossing, the water level of canal is much higher than that of the drainage.
Correct : B. False
23. The length of groyne depends upon the magnitude of river training required.
Correct : A. Right
24. When the quantity of the earth is much in excess of the quantity required for filling, it has to be deposited in the form of spoil banks. The spoil banks are made on
Correct : D. all of these
25. Irrigation
Correct : A. increases
26. Tortuosity of a meandering river is the ratio of
Correct : C. curved length along the river to the direct axial length of the river
27. For irrigation purposes, the p-H value of water should be
Correct : B. between 6 and 8.5
28. The precipitation caused by lifting of warm moisture laden air masses due to topographic barriers, is called
Correct : B. orographic precipitation
29. Which of the following is a type of non-modular outlet?
Correct : A. Submerged pipe outlet
30. Flood frequency denotes the likelyhood of flood being equalled or exceeded.
Correct : A. Yes
31. A degrading river is a scouring river.
Correct : A. Yes
32. The water content at which plants can no-longer extract sufficient water from the soil for its growth, is called
Correct : C. permanent wilting point
33. Lacey gave a relation between
Correct : C. both (a) and (b)
34. According to Khosla's theory, the critical hydraulic gradient for alluvial soils is approximately equal to
Correct : A. 1
35. When the bed level of the canal is higher than the highest flood level (H.F.L.) of the drainage, then the cross drainage work is said to be
Correct : A. aqueduct
36. The floor of the aqueduct is subjected to uplift pressure due to
Correct : C. both (a) and (b)
37. When the levels are such that the F.S.L. of the canal is much above the bed level of the drainage trough, so that the canal runs under syphonic action under the trough, the structure provided is known as
Correct : C. canal syphon
38. A fall, which maintains the depth is a
Correct : D. all of these
39. The soil becomes, practically, infertile if its p-H value is
Correct : C. 11
40. For the pipe outlet to be proportional, the outlet is set at
Correct : A. 0.3 times
41. In a lined canal, the resistance to flow decreases and velocity of flow increases.
Correct : A. Agree
42. According to Lacey, a channel is said to be in regime, if
Correct : D. all of the above
43. Which of the following satement is correct?
Correct : A. In Lacey's silt theory, the derivation of the various formulae depends upon a single factor 'f'.
44. Okhla weir on Yamuna river, in Delhi, is an example of
Correct : B. drystone slope weir
45. Kennedy gave a relation between
Correct : C. critical velocity and the depth of flowing water
46. Check flooding method of irrigation is used for
Correct : C. crops which can stand inundation of water for sometime
47. Lacey assumed that silt is kept in suspension because of the normal components of eddies generated from the
Correct : C. whole perimeter
48. In Bligh's creep theory
Correct : D. all of the above
49. Dicken's formula for high flood discharge is useful for catchments in
Correct : B. Northern India
50. Intensity of irrigation should be increased in order to prevent the area from water logging.
Correct : B. No
51. The irrigation is necessary in an area
Correct : D. all of the above
52. The infertility of the soil in water-logged areas is due to
Correct : D. all of these
53. A canal outlet should
Correct : D. all of the above
54. The moisture content of the soil, after free drainage has removed most of the gravity water, is known as
Correct : A. field capacity
55. A solid construction put across the river to raise its water level and divert the water into the canal, is known as
Correct : B. weir
56. The most economical section of a lined canal is
Correct : E. both (b) and (c)
57. A side slope canal, cross-drainage works are completely eliminated.
Correct : A. Agree
58. The hydrology helps in
Correct : D. all of these
59. A weir is generally aligned at right angle to the direction of the main river flow because
Correct : D. all of these
60. A deflecting groyne in a river is
Correct : B. perpendicular to bank
61. The method used for training of rivers is
Correct : D. all of these
62. In a barrage, crest level is kept
Correct : A. low with large gates
63. The process of loosing water from the leaves of plants, is termed as
Correct : C. transpiration
64. A graph showing variations of discharge with time, at a particular point of a stream is known as
Correct : C. hydrograph
65. The average duty for sugar-cane in hectares/cumec is
Correct : D. 800
66. When river flows in a plain country, its stage is known as
Correct : C. trough
67. In a syphon, the underside of the trough carrying drainage water is
Correct : B. higher than
68. A land is said to be water-logged when
Correct : A. the air circulation is stopped in the root zone due to the rise in water table
69. The setting for a sub-proportional outlet is
Correct : B. less
70. The maximum rainfall during a short period measured in mm / hour is called mean annual rainfall.
Correct : B. Disagree
71. The time (in days) that crop takes from the instant of its sowing to that of its harvest, is known as
Correct : B. crop
72. The perimeter discharge (P-Q) relation is given by the equation
Correct : C. P = 4.75 Q1/2
73. Available moisture may be defined as the
Correct : B. difference in water content of the soil between field capacity and permanent wilting
74. Which of the following statement is correct?
Correct : C. The capillary water is utilised by the plants.
75. The fall of moisture from the atmosphere to the earth surface in any form, is called
Correct : C. precipitation
76. The graphical representation of average rainfall and rainfall excess (i.e. rainfall minus infiltration) rates over specified areas during successive unit time intervals during a storm is known as
Correct : C. hyetograph
77. The maximum depth in soil strata, in which the crop spreads its root system, and derives water from the soil, is called
Correct : B. root zone depth
78. In a canal section, which is in partial filling and partial cutting
Correct : E. both (a) and (b)
79. The free board in a channel is governed by the
Correct : D. all of these
80. According to Khosla's theory, the exit gradient in the absence of a downstream cut-off is
Correct : C. infinity
81. Which of the following statement is wrong?
Correct : D. none of the above
82. Water logging takes place due to
Correct : A. rise
83. Outlet discharge for a particular crop is given by
Correct : A. Area / Outlet factor
84. Which of the following statements is wrong?
Correct : D. Water logging makes the land more productive.
85. A groyne
Correct : D. all of the above
86. An aggrading river is a
Correct : B. silting
87. The consumptive use of water of a crop
Correct : D. all of the above
88. A deflecting groyne has a much
Correct : B. shorter
89. Which of the following method is useful for obtaining values of flood discharges for a high recurrence interval?
Correct : C. Gumbel's method
90. The first watering, when the crop has grown a few centimetres, is called paleo.
Correct : B. Disagree
91. A river training work is generally required when the river is
Correct : C. meandering type
92. The narrow strip of land left at the ground level between the inner toe of the bank and top edge of the cutting, is known as
Correct : D. berm
93. Run-off is measured in
Correct : A. m3/s
94. Irrigation is said to be a science of survival.
Correct : A. Correct
95. According to Lacey
Correct : D. all of the above
96. The height of dowel above the road level should not be more than