Civil Engineering - Irrigation - Discussion

Pipe flow is the correct answer.

Answer is D is correct. Negative pressure.

The word siphon is used to refer to a wide variety of devices that involve the flow of liquids through tubes. In a narrower sense, the word refers particularly to a tube in an inverted 'U' shape, which causes a liquid to flow upward, above the surface of a reservoir, with no pump, but powered by the fall of the liquid as it flows down the tube under the pull of gravity, then discharging at a level lower than the surface of the reservoir from which it came.

Answer B is correct.

Yes, D Is absolutely right.

The answer is D.

Yes @Nag.

It is right answer when water flows partially in the pipe it is considered as an open channel, when it flows fully it is considered as flow through a pipe. This is all about assumption in fluid mechanics.

It is correct. In barrel, water flows fully up to the roof hence we consider that one as pipe flow.

It's due to negative pressure or opposite to gravity pressure (reverse gravity pressure).

Yes, It's [D] Under Negative Pressure.

I thing it's Negative pressure.