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Irrigation Engineering

Irrigation Engineering
The ratio of the head recovered to the head put in, is known as

Flexibility
Efficiency
Modular limit
Sensitivity

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Irrigation Engineering
Hydrodynamic pressure due to earthquake acts at a height of

3H/4π above the base
4H/3π above the base
3H/4π below the water surface
4H/3π below the water surface, where H is the depth of water

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Irrigation Engineering
If water table is comparatively high, the irrigation canal becomes useless, due to

Water logging of the cultivated areas
All of these
Large amount of seepage
Uncertain water demand

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Irrigation Engineering
For smooth entry of water in a canal, the angle between head regulator and water is generally kept

110°
90°
120°
80°

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Irrigation Engineering
The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to

60°
90°
45°
30°

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Irrigation Engineering
Garnett's diagrams are used for graphical solution of design equations of a canal by

Kennedy's theory
Lindlay theory
Gibb's theory
Lacey's theory

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