51. Which of the following can be used as a meter fall ?
A. vertical drop fall
B. flumed glacis fall
C. unflumed glacis fall
D. all of the above
✅ The correct answer is option A.
Irrigation, Water Resources Engineering and Hydrology MCQs
52. A 70% index of wetness means_______________?
A. rain excess of 30%
B. rain deficiency of 30%
C. rain deficiency of 70%
D. none of the above
✅ The correct answer is option B.
53. The shape of recession limb of a hydrograph depends upon________________?
A. basin characteristics only
B. storm characteristics only
C. both (A) and (B)
D. none of the above
✅ The correct answer is option A.
54. Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be_________?
A. 19 m
B. 38m
C. 57m
D. 76m
✅ The correct answer is option B.
55. A deep well_________________?
A. is always deeper than a shallow well
B. has more discharge than a shallow well
C. is weaker structurally than a shallow well
D. both (A) and (B)
✅ The correct answer is option B.
56. If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be__________________?
A. 1 + (0.9)010
B. 1 – (0.9)°l0
C. 1/(1-0.9°10)
D. 1/(1+ 0.9010)
✅ The correct answer is option C.
57. The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be__________________?
A. 20 3/sec
B. 25 m3/sec
C. 30 m3/sec
D. 35 m3/sec
✅ The correct answer is option B.
58. The value of Sodium Absorption Ratio for high sodium water lies between________________?
A. 0 to 10
B. 10 to 18
C. 18 to 26
D. 26 to 34
✅ The correct answer is option C.
59. The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in___________________?
A. aqueduct and syphon aqueduct
B. aqueduct and super passage
C. super passage and canal syphon
D. level crossing
✅ The correct answer is option C.
60. The most suitable chemical which can be applied to the water surface for reducing evaporation is________________?
A. methyl alcohol
B. ethyl alcohol
C. cetyl alcohol
D. butyl alcohol
✅ The correct answer is option C.