Physics · Cross Drainage Works
In the context of cross-drainage structures in hydraulic engineering, which of the following statements is correct regarding the relative positions of a natural drain and an irrigation canal?
- 1In a canal syphon, natural drain water flows at exactly the same bed level as the irrigation canal without intersecting it.
- 2In a level crossing, natural drain water always flows through a pipe syphon underneath the irrigation canal.
- 3In an aqueduct, natural drain water flows over the irrigation canal, whereas in a super-passage, natural drain water flows under the irrigation canal.
- 4In an aqueduct, natural drain water flows under the irrigation canal, whereas in a super-passage, natural drain water flows over the irrigation canal.✓
Correct answer
In an aqueduct, natural drain water flows under the irrigation canal, whereas in a super-passage, natural drain water flows over the irrigation canal.
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