Irrigation Engineering
Which one of the following statements is correct?

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

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Irrigation Engineering
If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then

All listed here
Depth of the centre of pressure is 2/3H vertically below the surface
Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅
Total pressure on the surface is equal to ωx̅

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Irrigation Engineering
As per Lacey’s theory, the silt factor is

directly proportional to average par¬ticle size
inversely proportional to average par¬ticle size
directly proportional to square root of average particle size
not related to average particle size

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