A graph illustrating the storage volume of a reservoir or tank at any given water level is called ____________________?
Show answer Hide answer
Answer: C. Capacity curve
Explanation
A capacity curve graphically represents the relationship between a reservoir's water level and its storage volume. Engineers plot elevation on the vertical axis against corresponding cumulative reservoir storage on the horizontal axis. This essential curve is derived from detailed topographic contour maps of the impounded river valley. Reservoir sizing requires accurate volumetric calculations to determine flood storage and water supply yields. Planimeters are traditionally used to measure surface water areas enclosed by successive contour lines. Multiplying contour area increments by elevation intervals yields the incremental storage volume of the basin.
Dam operators consult capacity curves daily to manage flood releases and track available irrigation storage. Hydropower planners use these volume curves to evaluate potential electricity generation capacities at various reservoir levels. Sedimentation monitoring relies on updated capacity curves to calculate lost storage volume over decades of operation. Mass curve specifically plots cumulative volume against time to analyze reservoir storage requirements over droughts. Volume curve is an incomplete alternative name compared to the standard hydrological term capacity curve. All are correct is false because mass curves serve a fundamentally different analytical purpose in hydrology.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
Related questions
Q1. A specific discharge flow where the total energy—namely the sum of potential, kinetic, and pressure energies—reaches a minimum is termed _______________________?
Show answer Hide answer
Answer: B. Critical flow
Critical flow occurs when specific discharge energy reaches a minimum for a given flow rate. At this unique hydraulic state, the Froude number of the open channel flow equals exactly one. Specific energy is defined as th...
Q2. A mine or tunnel engineered to collect seepage water within rock or a dam is known as ____________________?
Show answer Hide answer
Answer: B. Seepage gallery
A seepage gallery is a tunnel-like structure constructed to collect subterranean water or control dam seepage. These horizontal drainage conduits intercept percolating groundwater and channel it safely away from sensitiv...
Q3. Flow characterized by a constant volume of liquid passing per second is termed ___________________?
Show answer Hide answer
Answer: B. Steady flow
Steady flow is characterized by a constant volume of liquid passing a given cross-section per unit time. Under steady conditions, fluid velocity and pressure at any specific point do not fluctuate over time. Discharge re...
Q4. In a pipe flowing entirely full, liquid particles attain their maximum velocity at __________________?
Show answer Hide answer
Answer: B. Centre of pipe
Fluid velocity reaches its absolute maximum near the pipe centerline due to minimal friction interference. The fluid particles at the exact center experience the least amount of shear stress from pipe walls. Frictional r...
Q5. A module or outlet providing a fixed and restricted discharge regardless of water level fluctuations in the distributary is called _________________?
Show answer Hide answer
Answer: A. Modular
A modular outlet provides a fixed discharge regardless of upstream or downstream water level fluctuations. These self-governing devices utilize hydraulic principles like submerged orifices or weir submergence limits. Far...
Q6. TSP contains ____________________?
Show answer Hide answer
Answer: B. 46%P
Triple superphosphate contains a high percentage of phosphorus equivalent, commonly cited around forty-six percent P2O5. Manufacture involves treating phosphate rock with phosphoric acid rather than sulfuric acid to incr...