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Irrigation - Engineering

Q1:

An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as

A non-modular outlet

B semi-modular outlet

C flexible modular outlet

D right modular outlet.

ANS:D - right modular outlet.

Canal outlet or modules: Structure built at the head of the watercourse so as to connect it with a minor or distributary channel.

Types.

1) Non-modular outlet: outlet through which discharge depends upon difference of head between distributary & watercourse.
Eg: open sluice.

2) Semi-module or flexible module: outlet through which discharge independent of water level of watercourse but only depend on the water level of distributary.
Eg: pipe outlet, venturi flume.

3) Rigid module or modular outlet: Outlet through which discharge is constant & fixed within the limit.
Eg: Gibb's module.