For diversion of flood water of rivers, the type of canal constructed, is
A. Ridge canal
B. Perennial canal
C. Inundation canal
D. Canal
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The water stored in the reservoir below the minimum pool level is called
A. useful storage
B. dead storage
C. valley storage
D. surcharge storage
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A straight glacis type fall with a baffle platform and a baffle wall is called
A. Vertical drop-fall
B. Glacis fall
C. Montague type fall
D. Inglis fall
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In rigid module, the discharge
A. Is independent of water levels in the distributary and water course
B. Depends upon the water level in distributary
C. Depends upon the water level in the water course
D. Depends upon the water levels of both, i.e. distributary and water course
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If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle θ with horizontal, the hydraulic mean depth is
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Seepage through foundation in an earthen dam is controlled by providing
A. rock toe
B. horizontal blanket
C. impervious cut off
D. chimney drain
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Irrigation canals are generally aligned along
A. Ridge line
B. Contour line
C. Valley line
D. Straight line
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Infiltration capacity
A. is a constant factor
B. changes with time
C. changes with location
D. changes with both time and location
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The water utilizable by plants is available in soils mainly in the form of
A. gravity water
B. capillary water
C. hydroscopic water
D. chemical water
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Effective precipitation for a crop may be defined as
A. Total precipitation minus the loss due to evaporation
B. Total precipitation minus the loss due to infiltration
C. Total precipitation during the crop period
D. Available water stored in soil within root zone of the crop
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Pick up the incorrect statement from the following:
A. In free flooding irrigation, water is admitted at one corner of a field and is allowed to spread over the entire area
B. In check method of irrigation, the field is divided into smaller compartments and water is admitted to each in turn
C. In furrow irrigation water is admitted between the rows of plants in the field
D. None of these
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A deficit of sediments in flowing water may cause a river
A. Meandering type
B. Aggrading type
C. Degrading type
D. Sub-critical type
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Which one of the following statements is correct?
A. The canal system and the drainage system are complementary
B. The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land
C. The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream
D. All the above
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Cyclonic precipitation is caused by lifting of an air mass due to
A. pressure difference
B. temperature difference
C. natural topographical barriers
D. all of the above
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If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation
A. t = G + t h + 1
B. t = G + t h − 1
C. t = G − t h − 1
D. t = G h + 1
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Side slopes generally kept for canals in loam soil, are:
A. 1 : 1 in cutting and 1 2 1 : 1 in filling
B. 1 2 1 : 1 in cutting and 2 : 1 in filling
C. Neither (A) nor (B)
D. Both (A) and (B)
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If the R.L’s of canal bed level and high flood level of drainage are 212.0 m and 210.0 m respectively, then cross drainage work will be
A. aqueduct
B. superpassage
C. syphon
D. syphon aqueduct
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The most suitable location of a canal head work, is
A. Boulders stage of the river
B. Delta stage of the river
C. Rock stage of the river
D. Trough stage of the river
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Cross regulators in main canals are provided
A. To regulate water supply in the distributaries
B. To increase water head upstream when a main canal is running with low supplies
C. To overflow excessive flow water
D. None of these
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Process of meandering is due to
A. Sediment load of streams
B. Discharge and hydraulic properties of streams
C. Relative erodibility of the bed and banks
D. All the above
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