39.2.2 - Mathematical Expression
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Practice Questions
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Define Duty in irrigation engineering.
💡 Hint: Think about what Duty refers to in terms of irrigation.
What unit is Duty expressed in?
💡 Hint: Consider where you see water flow and land area.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the definition of Duty in irrigation?
💡 Hint: Think about how we express irrigation needs.
True or False: Net Duty is always greater than Gross Duty.
💡 Hint: Which duty takes into account real losses?
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Challenge Problems
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A canal system has a discharge of 5 cumecs and is designed to irrigate an area of 15,000 hectares. What is the Duty? Then, if the base period for the crop is 150 days, calculate the Delta.
💡 Hint: Use the formulas for Duty and Delta.
If a farmer is given a plot of 500 hectares that requires 1000 hectares/cumec as Duty, what is the discharge needed for the plot?
💡 Hint: Remember to rearrange the Duty formula.
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