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Hydrology & Irrigation

Types of Cross Drainage Structures

A cross drain...

Question

A cross drainage structure in which natural drain is carried over the canal and full supply level of canal is higher than that of bed of natural drain is called :

A

Syphon aqueduct

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B

Super passage

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C

Syphon

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D

Aqueduct

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Solution

The correct option is C Syphon
Canal Syphon/Syphon

$\to Canal below the drain$

$\to FSL of the canal is higher than the bed of the canal$

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Similar questions

Q. What type of cross drainage work is provided when the canal runs below the drain, with FSL of canal well below the bed of the drain?

Q. List-I
A. Aqueduct

B. Level crossing

C. Super passage

D. Syphon

List-II
1. The drainage water is carried in a trough supported on piers while the irrigation canal passes below the drain with its FSL well below the slab level of the trough above.

2. The drainage water is carried in a trough supported on piers while the irrigation canal passes below the drain with its FSL above the slab level of the trough above.

3. The canal and the drain approach each practically at the same level.

4. The irrigation canal is carried across the drain in a trough supported on piers with the canal bed level well above the HFL of the drain.

Q. If the path of an irrigation canal is below the level of a natural stream, the type of cross-drainage structure provided is

Q. Superpassage is a canal cross-drainage structure in which

Q. Match List-I (Relative position of canal and drainage channel) with List-II (Type of cross drainage work) and select the correct answer using the code given below the lists:
List-I
A. Canal taken above the drainage channel at its grade
B. Drainage channel taken above the canal at its bed slope
C. Canal taken below the drainage channel
D. Drainage channel taken below the canal
List-II
1. Canal siphon
2. Drainage siphon
3. Aqueduct
4. Super passage

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