The ratio of the rate of change of outlet discharge to the rate of change of distributary discharge is called ______________________?
Show answer Hide answer
Answer: B. flexibility
Explanation
Flexibility is defined as the ratio of the rate of change of outlet discharge to distributary discharge. This hydraulic metric evaluates how responsive an irrigation canal outlet is to fluctuations in channel flow. Designers use flexibility values to ensure equitable water distribution among various distributary command areas. Canal outlets regulate water delivery from distributary channels to smaller field watercourses and farms. Proportional outlets maintain a constant ratio of discharge regardless of upstream water level variations. Hydraulic engineers calculate flexibility to prevent tail-end water shortages in large irrigation networks.
Managing irrigation delivery performance requires precise understanding of outlet flexibility and sensitivity. Properly designed distribution structures prevent upstream farmers from taking excessive water supplies illegally. Equitable water allocation improves agricultural productivity and minimizes disputes among farming communities. Proportionality describes an outlet whose discharge ratio remains constant, but flexibility is the formal ratio term. Sensitivity measures the rate of change of outlet discharge relative to upstream water level changes. Flow abili is a meaningless phrase and does not represent any recognized irrigation engineering terminology.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
Related questions
Q1. The percentage of water-filled void volume relative to the total volume of soil grain solids is called __________________?
Show answer Hide answer
Answer: C. Degree of saturation
Degree of saturation is the percentage of void volume filled with water relative to total pores. This geotechnical parameter measures how much of the available soil pore space contains liquid water. A fully saturated soi...
Q2. The optimal central angle for an arch dam design is established at ___________________?
Show answer Hide answer
Answer: B. 133!
The optimal central angle for an arch dam design is established to maximize structural efficiency. Engineering analysis and model testing have determined that this ideal angle is approximately one hundred thirty-three de...
Q3. The resultant water pressure acts at ________________________?
Show answer Hide answer
Answer: A. H/3
Hydrostatic pressure from standing water acts triangularly against vertical retaining walls and dams. The resultant water pressure force acts precisely at one-third of the total height from the base. Integrating the tria...
Q4. The upstream rise in river water level caused by weir construction is called __________________?
Show answer Hide answer
Answer: C. Afflux
Afflux is the backwater rise in upstream river water level caused by a weir obstruction. Constructing a barrage or weir creates a physical barrier that raises water levels immediately upstream. Engineers must calculate t...
Q5. The quantity of water lost via plant transpiration and evaporation from adjacent field surfaces is termed ___________________?
Show answer Hide answer
Answer: D. a & b are correct
Consumptive use and evapo-transpiration both describe the total water lost through plant transpiration and field evaporation. Plant transpiration moves moisture from root zones through stems and out into the surrounding...
Q6. The branch of water science dealing with resource depletion and replenishment is called _________________?
Show answer Hide answer
Answer: A. Hydrology
Hydrology is the scientific discipline dedicated to studying water properties, distribution, depletion, and replenishment. It analyzes the continuous movement and storage of water across the Earth through the global hydr...