The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of
A. same duration only
B. same and shorter duration
C. same and longer duration
D. any duration
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Which of the following is a non-recording raingauge ?
A. tipping bucket type raingauge
B. Simon’s raingauge
C. Steven’s weighing type raingauge
D. floating type raingauge
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In India, which of the following is adopted as standard recording rain-gauge?
A. Symon’s rain-gauge
B. Tipping bucket type
C. Natural siphon type
D. Weighing bucket type
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According to Lacey, in regime conditions
A. Silt is kept in suspension by vertical components of eddies
B. Entire cross-section of the channel is generated at all points by the forces normal to the wetted perimeter
C. Both (A) and (B)
D. Neither (A) nor (B)
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The flow-mass curve is graphical representation of
A. Cumulative discharge and time
B. Discharge and percentage probability of flow being equaled or exceeded
C. Cumulative discharge, volume and time in chronological order
D. Discharge and time in chronological order
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A hyetograph is a graphical representation of
A. rainfall intensity and time
B. rainfall depth and time
C. discharge and time
D. cumulative rainfall and time
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Hydrograph is the graphical representation of
A. runoff and time
B. surface runoff and time
C. ground waterflow and time
D. rainfall and time
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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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Pick up the correct statement from the following
A. In a level crossing, a crest with its top at the canal F.S.L. is provided across the drainage at its up-stream junction with canal
B. In a level crossing a regulator is provided across the drainage at its down-stream
C. In a level crossing, a cross regulator is provided on the canal below the crossing
D. All the above
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The useful storage is the volume of water stored in the reservoir between
A. minimum pool level and maximum pool level
B. minimum pool level and normal pool level
C. normal pool level and maximum pool level
D. river bed and minimum pool level
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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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Lacey's equation for calculating flood discharge in rivers, is
A. V = 10.8 R 2 1 S 2 1
B. V = 10.8 R 3 2 S 2 1
C. V = 10.8 R 3 2 S 3 1
D. V = 10.8 R 3 1 S 3 2
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Which of the following types of falls use parabolic glacis for energy dissipation ?
A. vertical drop fall
B. glacis fall
C. Montague type fall
D. inglis fall
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Lining of irrigation channels
A. increases the waterlogging area
B. decreases the waterlogging area
C. does not change the water logging area
D. none of the above
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Canals taken off from ice-fed perennial rivers, are known
A. Permanent canals
B. Ridge canals
C. Perennial canals
D. Inundation canals
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The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to
A. 1 to 2 m per second
B. 2 to 3 m per second
C. 3 to 4 m per second
D. 4 to 5 m per second
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Pick up the correct sequence of the part of a canal system from the following
A. Head work-distributary-branch canal-minor
B. Head works-main canal-branch canal-distributary-minor
C. Head works-main canal-branch canal-minor-distributary
D. Heads works-branch canal-main canal distributary, minor
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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 , C2 and C3 where drainage bed levels C1 > C2 > C3 , you will provide at site C3
A. An aqueduct
B. A syphon aqueduct
C. A super passage
D. A syphon
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The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after
A. 50 years
B. 150 years
C. 200 years
D. 250 years
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To hold hydraulic jumps, baffle walls are provided in
A. Sarda type falls
B. English type falls
C. Montague type falls
D. Vertical type falls
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