Irrigation Engineering
An artesian aquifer is the one where

None of these
water surface under the ground is at atmospheric pressure
water is under pressure between two impervious strata
water table serves as upper surface of zone of saturation

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Irrigation Engineering
Pick up the correct statement from the following sentence

The escapes are aligned to take advantage of contours of lower values
The escapes must lead the surplus water to natural drainages
All of these
Escapes are essential safety valves in a canal system

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