Practice Mathematical Expression (39.2.2) - Duty and Delta - Hydrology & Water Resources Engineering

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6 sample questions

Question 1.
Define Duty in irrigation engineering.
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Think about what Duty refers to in terms of irrigation.
Question 2.
What unit is Duty expressed in?
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Consider where you see water flow and land area.
3Question 3.
What is the definition of Duty in irrigation?
- Area irrigated by unit discharge
- Volume of water flow
- Efficiency of water use
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Think about how we express irrigation needs.
4Question 4.
True or False: Net Duty is always greater than Gross Duty.
- True
- False
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Which duty takes into account real losses?
Question 5.
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.
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Use the formulas for Duty and Delta.
Question 6.
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?
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Remember to rearrange the Duty formula.

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