Irrigation Engineering
The main function of a divide wall is to

provide smooth flow at sufficiently low velocity
separate the undersluices from weir proper
prevent river floods from entering the canal
control the silt entry in the canal

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Irrigation Engineering
Which one of the following statements is correct?

The canal system and the drainage system are complementary
The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land
All listed here
The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream

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Irrigation Engineering
The flow-mass curve is graphical representation of

Discharge and time in chronological order
Discharge and percentage probability of flow being equaled or exceeded
Cumulative discharge, volume and time in chronological order
Cumulative discharge and time

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