2. Inglis formula is used for estimating flood discharge for
Correct : A. the catchments of former Bombay Presidency
3. Lining of a canal
Correct : D. all of the above
4. Which of the following statements is wrong?
Correct : D. none of the above
5. The flooding is also termed as wild flooding.
Correct : A. Right
6. The tortuosity of a meandering river is always
Correct : C. greater than
7. According to Khosla's theory, the undermining of the floor starts from the
Correct : B. tail end
8. The irrigation water is said to be unsatisfactory, if it contains
Correct : D. all of the above
9. Which of the salt present in water is harmful for cultivation purposes?
Correct : D. none of these
10. The width of dowel is, usually, kept from
Correct : B. 0.3 m to 0.6 m
11. A device which ensures a constant discharge of water passing from one channel to another irrespective of water level in each within certain specified limits, is called
Correct : B. module
12. The sodium carbonate lining consists of at lest
Correct : A. 6% sodium carbonate and 10% clay
13. The degree of sinuosity is the ratio between the
Correct : C. curved length and the straight air distance
14. The excapes must lead the surplus water to natural drainage.
Correct : A. True
15. The kor depth for rice is 19 cm and kor period is 14 days. The outlet factor for the crop in hectares per cumec will be
Correct : B. 637
16. The repelling groyne is constructed in such a way that it is pointing towards
Correct : A. upstream
17. The estimation of flood can be made
Correct : D. all of these
18. The amount of water required to fill up the pore spaces in soil particles by replacing all air held in pore spaces, is known as
Correct : B. saturation capacity
19. The crops require maximum water during
Correct : C. first watering when the crop has grown a fwd centimetres
20. The efficiency is a measure of conservation of head by an outlet.
Correct : A. True
21. The incoherent alluvium is a soil composed of loose granular graded material which can be scoured with the same ease with which it is deposited.
Correct : A. Right
22. When the difference in weir crest and downstream river bed is limited into 3 metres, the weir, generally used is
Correct : C. concrete slope weir
23. A structure constructed in an irrigation canal for the purpose of wasting some of its water, is known as a
Correct : B. escape
24. The Inglis type fall makes use of
Correct : B. horizontl
25. A groyne is a structure constructed transverse to the river flow and extend from the bank into the river upto a certain limit.
Correct : A. Agree
26. Gibb's module is a type of
Correct : C. rigid modular outlet
27. A hydrograph representing one cm of run off from a rainfall of some unit duration and specific area distribution is known as
Correct : C. unit hydrograph
28. The duty of a crop is 432 hectares per cumec when the base period of the crop is 100 days. The delta for the crop will be
Correct : B. 200
29. The first watering before sowing the crop, is known as
Correct : B. paleo
30. The measure adopted to reclaim the water-logged area is
Correct : A. installation of lift irrigation schemes
31. Water logging is caused due to
Correct : D. all of these
32. In Sarda type fall, the length of the crest is kept
Correct : B. equal to
33. In a super-passage, the F.S.L. of the canal is
Correct : A. lower than the underside of the trough carrying drainage water
34. Which of the following statement is correct?
Correct : D. all of the above
35. The total depth of water required by a crop during the entire period the crop is in the field, is known as
Correct : A. delta
36. A canal aligned at right angles to the contour of a country, is known as
Correct : A. side slope canal
37. A hydraulic jump is formed when
Correct : B. a super-critical flow strikes against a sub-critical flow
38. When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the under side of the supporting structure, the structure provided is super-passage.
Correct : A. Correct
39. According to Kennedy, the silt supporting power is
Correct : A. directly proportional to
40. Which of the following statements is correct?
Correct : D. all of the above
41. A part of water which exists in the porous space of the soil by molecular attraction, is known as
Correct : A. capillary water
42. For a discharge of 4m3/s in Sarda type fall,
Correct : A. rectangular
43. A contour canal
Correct : D. all of the above
44. Kennedy, in his silt theory, assumed that the silt is kept in suspension because of eddies generated from the
Correct : A. bed only
45. When an oven-dried sample of soil is kept open in the atmosphere, it absorbs some amount of water. This water is known as
Correct : C. hygroscopic water
46. The level of a canal diversion head work depends upon
Correct : D. all of these
47. An outlet is said to be proportional, if its flexibility is
Correct : C. equal to unity
48. The weed growth in a canal leads to
Correct : B. decrease in discharge
49. Sandy soils with good drainage become impermeable after prolonged use, if it is irrigated with a water containing
Correct : D. 85%
50. The ratio of the rate of change of discharge of an outlet to the rate of change of the discharge of the distributing channel, is termed as
Correct : B. flexibility
51. The earth's water circulatory system, is known as
Correct : B. hydrologic cycle
52. The discharge (Q) over trapezoidal crest of Sarda fall is
Correct : C. more
53. The channel after attaining its section and longitudinal slope, will be said to be in
Correct : B. final
54. The ratio of the hed recovered to the head put in an outlet, is called
Correct : D. efficiency
55. A diversion head work is constructed to
Correct : D. all of the above
56. Irrigation canals are generally aligned along
Correct : B. water shed
57. Kennedy gave his own formula for the determination of mean velocity.
Correct : B. Incorrect
58. When the water is thrown into a well over a crest from where it escapes near its bottom, the type of fall is called
Correct : B. cylinder fall
59. Cyclonic precipitation results from
Correct : A. lifting of air masses converging into low pressure area
60. Which of the following statement is wrong?
Correct : D. Energy dissipators are provided for small discharges.
61. The gaps created in the bank of a canal is called a breach.
Correct : A. Correct
62. In Lane's weighted creep theory, he proposed a weight of
Correct : A. three for vertical creep and one for horizontal creep
63. Escapes are also known as
Correct : B. safety valves
64. Inundation canals draw their supplies from rivers whenever there is a
Correct : B. high
65. The setting for a hyper-proportional outlet is
Correct : A. more
66. The method of irrigation used for orchards is
Correct : D. basin flooding
67. For a canal which irrigate the area directly, the fall should be provided at a location where the F.S.L. outstrips the gound level, but before the bed of the canal comes into filling.
Correct : A. Right
68. The ratio of the head recovered to the head put in an outlet, is called
Correct : D. efficiency
69. Lining of a canal is necessary
Correct : D. all of the above
70. The movement of water through the soil surface into the soil, is called infilteration.
Correct : A. Correct
71. Consumptive use of water by a crop is equal to
Correct : C. the depth of water consumed by evaporation and transpiration during crop growth, including water consumed by accompanying weed growth
72. The duty of irrigation water goes on
Correct : A. increasing
73. Which of the following is the correct sequence of the parts of a canal system?
Correct : B. Head works, main canal, branch canal, distributary and minor.
74. The alignment of a canal
Correct : D. all of the above
75. The berms provide additional strength to banks and thus make it safe against breaches.
Correct : A. True
76. Garret's diagram gives the graphical method of designing a channel based on
Correct : C. Kennedy's theory
77. The fall which can be used as a meter fall, is
Correct : A. vertical drop fall
78. A canal aligned roughly at right angles to the contours of the country is called ridge canal.
Correct : B. False
79. According to Fanning's formula, the flood discharge (Q) in cumecs is given by
Correct : C. Q = CA5/6
80. Super-fluous water is also called
Correct : B. gravitational water
81. The hydrology is a science which deals with the
Correct : D. all of these
82. The ratio between the depths of water levels over crest on the downstream and upstream of the module, is known as
Correct : C. drowning ratio
83. The duty of irrigation water will be less if
Correct : C. water supply required is more
84. The width and length of mender as well as width of river, vary approximately with
Correct : C. square root of discharge
85. In the case of a proportional outlet, the setting is equal to the ratio of outlet index to the channel index.
Correct : A. Correct
86. The cylinder or well fall is quite suitable and economical for
Correct : B. low discharges and high drops
87. The setting of an outlet is defined as the ratio of the
Correct : C. depth of the sill or the crest level of the module below the full supply of the distributing channel to the full supply depth of the distributing channel
88. A sudden fall of level of ground along the alignment of a canal joined by an inclined bed is called a
Correct : A. rapid fall
89. Capillary water is a useful soil moisture for the growth of plants.
Correct : A. Yes
90. The area in which crop is grown at a particular time or crop season, is called
Correct : B. culturable commanded area
91. The standard height of a standard rain gauge is
Correct : C. 30 cm
92. The saturation gradient in an ordinary loam soil is
Correct : D. 4 ; 1
93. The field capacity of a soil depends upon
Correct : D. both (a) and (b)
94. For the repairing of an old but sound concrete lining, the lining preferred is
Correct : A. shotcrete lining
95. The term balancing depth has the same meaning as the depth of water in canal.
Correct : B. Wrong
96. When the critical velocity ratio is less than one, the channel is said to be in silting.
Correct : A. True
97. For potato, sugarcane and groundnut, the furrow method of irrigation is adopted.
Correct : A. Yes
98. Where steep land is available, the method of irrigation adopted is
Correct : A. free flooding
99. A channel is said to be in scouring when the critical velocity ratio is
Correct : C. greater than
100. In case of small channels, the borrow pits should start from a distance not less than