The ratio of the rate of change of outlet discharge to the water level fluctuation rate of the distributary is called _________________?
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Answer: D. Sensitivity
Explanation
Sensitivity measures how responsive an irrigation outlet discharge is to distributary water level changes. It compares percentage variations in outlet discharge against percentage variations in parent channel level. The mathematical formulation directly defines this hydraulic parameter as outlet sensitivity. Distributary canals require careful regulation to ensure equitable water distribution among farming plots. Hydraulic engineers evaluate outlet performance using dimensionless ratios of discharge and water depth. High sensitivity means small canal fluctuations cause disproportionately large changes in outlet flow.
Managing irrigation networks effectively depends on selecting outlets with appropriate sensitivity values. This parameter helps engineers prevent downstream flooding or water shortages during peak irrigation periods. Proper design ensures fair water allocation even when main canal supplies vary significantly. Option A refers to flexibility, which compares discharge ratios rather than percentage fluctuations. Option B relates to proportionality, describing an outlet whose discharge ratio equals unity. Option C represents the setting of a sluice gate rather than its discharge sensitivity.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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