When a canal and a drainage approach each other at the same level, the structure

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Question
When a canal and a drainage approach each other at the same level, the structure so provided, is
Options
A. an aqueduct
B. a syphon
C. a level crossing
D. inlet and outlet.

Correct Answer

a level crossing

Irrigation problems

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1. The main function of a diversion head works of a canal from a river, is
Options
A. to remove silt
B. to control floods
C. to store water
D. to raise water level
E. all the above.

2. The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of
Options
A. reverse curve
B. next curve of the same order
C. reverse curve plus the width of the river
D. none of these.

4. If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle ? with horizontal, the perimeter of the canal is
Options
A. R(? + tan ?)
B. 2R(? + tan ?)
C. R(? + cos ?)
D. 2R(? + cos ?)
E. none of these.

7. According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase
Options
A. rate of flood wave
B. water surface elevation during floods
C. maximum discharge
D. velocity and scouring action
E. surface slope of streams above the leveed portion.

8. Pick up the incorrect statement from the following:
Options
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.

10. For the design of major hydraulic structures on the canals, the method generally preferred to, is based on
Options
A. Bligh's theory
B. Electrical analogy method
C. The relaxation method
D. Khosla's method of independent variables.

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