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MCQs 1: The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in___________________?

aqueduct and syphon aqueduct aqueduct and super passage super passage and canal syphon level crossing
Answer Explanation

MCQs 2: Which of the following canal outlets maintains a constant discharge ?

non-modular outlet flexible outlet rigid module none of the above
Answer Explanation

MCQs 3: Which of the following can be used as a meter fall ?

vertical drop fall flumed glacis fall unflumed glacis fall all of the above
Answer Explanation

MCQs 4: Which of the following types of falls use parabolic glacis for energy dissipation ?

vertical drop fall glacis fall Montague type fall inglis fall
Answer Explanation

MCQs 5: Which of the following is a flexible outlet ?

submerged pipe outlet Kennedy’s gauge outlet Gibb’s outlet none of the above
Answer Explanation

MCQs 6: If the critical shear stress of a channel is xc, then the average value of shear stress required to move the grain on the bank is___________________?

0.5 xc 0.75 TC xc 1.33 TC
Answer Explanation

MCQs 7: For a proportional outlet, the flexibility is______________?

zero between zero and 1 1 greater than 1
Answer Explanation

MCQs 8: Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be_________?

19 m 38m 57m 76m
Answer Explanation

MCQs 9: The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by______________?

4RS 11 RS 7RS 15 RS
Answer Explanation

MCQs 10: Silt excluders are constructed on the________________?

river bed upstream of head regulator river bed downstream of head regulator canal bed upstream of head regulator canal bed downstream of head regulator
Answer Explanation

MCQs 11: A divide wall is provided_______________?

at right angle to the axis of weir parallel to the axis of weir and up-stream of it parallel to the axis of weir and down-stream of it at an inclination to the axis of weir
Answer Explanation

MCQs 12: Generally the weir is aligned at right angles to the direction of the main river current because______________?

it ensures less length of the weir it gives better discharging capacity it is economical all of the above
Answer Explanation

MCQs 13: For the upstream face of an earthen dam, the most adverse condition for stability of slope is_______________?

sudden drawdown steady seepage during construction sloughing of slope
Answer Explanation

MCQs 14: In case of non-availability of space due to topography, the most suitable spillway is________________?

straight drop spillway shaft spillway chute spillway ogee spillway
Answer Explanation

MCQs 15: Coefficient of discharge of an ogee spillway________________?

depends on depth of approach and upstream slope depends on downstream apron interference and downstream submergence remains constant both (A) and (B)
Answer Explanation

MCQs 16: The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are_________________?

at right angle and parallel to weir crest parallel and at right angle to weir crest parallel to weir crest in both at right angle to weir crest in both
Answer Explanation

MCQs 17: Main purpose of mean water training for rivers is________________?

flood control to provide sufficient depth of water in navigable channels, during low water periods to preserve the channel in good shape by efficient disposal of suspended and bed load all of the above
Answer Explanation

MCQs 18: Seepage through embankments in an earthen dam is controlled by_______________?

drainage filters relief wells drain trenches provision of downstream berms
Answer Explanation

MCQs 19: As compared to gravity dams, earthen dams__________________?

are costlier are less susceptible to failure require sound rock foundations require less skilled labour
Answer Explanation

MCQs 20: The maximum permissible eccentricity for no tension at the base of a gravity dam is__________________?

B/2 B/3 B/4 B/6
Answer Explanation

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