In irrigation engineering, the term delta denotes the:
Correct answer: B. Total depth of water required by a crop during its base period
- A. Area irrigated by one unit discharge
- B. Total depth of water required by a crop during its base period
- C. Time between two consecutive irrigations
- D. Percentage of water lost in conveyance
Explanation
Delta is the total depth of water required over the cropped area during the base period of a crop. Duty instead expresses the area irrigated by a unit discharge, so the two terms are related but not identical.
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About Hydraulics and Water Resources
Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
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