2706)What is the formula used to calculate discharge in the float method?
Anonymous Quiz
18%
Q = A × V
65%
Q = Volume / Time
15%
Q = Area × Time
3%
Q = Velocity / Resistance
2707)Which of the following is a key feature of the water meter method?
Anonymous Quiz
3%
Measures soil moisture
77%
Measures flow rate using a rotating propeller
17%
Measures temperature variation in water
3%
Measures evaporation rates
2708)What is necessary for accurate operation of a water meter?
Anonymous Quiz
28%
The pipe must flow full at all times
50%
The pipe must be under pressure
16%
The water should be non-turbulent
6%
The water temperature must be constant
2709)What type of water measuring structure is often used in open channels to measure flow?
Anonymous Quiz
28%
Weir
44%
Orifice
22%
Flume
6%
Water meter
2710)What type of weir is commonly used for water measurement in irrigation channels?
Anonymous Quiz
24%
Triangular weir
45%
Parshall weir
24%
Broad crested weir
6%
Round weir
2711)What is a Parshall flume used for in irrigation systems?
Anonymous Quiz
6%
To measure temperature
91%
To measure water flow in an open conduit
3%
To store water
0%
To regulate water pressure
2712)What is the Parshall flume’s primary advantage in measuring water flow?
Anonymous Quiz
6%
It is simple to install
23%
It has minimal head loss
71%
It can measure high water flows
0%
It requires no calibration
2713)Which of the following water measuring devices is used for measuring highly variable flow?
Anonymous Quiz
29%
Venturi meter
35%
Triangular weir
16%
Orifice plate
19%
Parshall flume
2714)What type of weir is most suitable for measuring small to medium-sized streams?
Anonymous Quiz
13%
Trapezoidal weir
72%
90º V-notch weir
13%
Broad crested weir
3%
Parshall flume
2715)What is the primary function of an orifice in water measurement?
Anonymous Quiz
3%
To store excess water
13%
To measure water temperature
78%
To measure water flow in open channels
6%
To regulate the water pressure
2716)In water measurement, which of the following is a key benefit of using a flume?
Anonymous Quiz
0%
It does not require electricity
93%
It provides accurate measurements for highly variable water flow
3%
It can only measure small amounts of water
3%
It has a low installation cost
2717)What is a tracer method used for in irrigation?
Anonymous Quiz
3%
To measure soil texture
90%
To measure water flow without installing permanent structures
3%
To measure evaporation
3%
To measure soil pH
2718)How is water flow measured using a tracer method?
Anonymous Quiz
70%
By adding a dye to the water and measuring its dilution
23%
By measuring the temperature variation
3%
By measuring the weight of water
3%
By measuring the electrical conductivity
2719)Which of the following is an example of a volumetric method for measuring water?
Anonymous Quiz
25%
Water meter
44%
Parshall flume
22%
V-notch weir
9%
Tracer method
2720)What does the equation "Qt = ad" represent in irrigation water measurement?
Anonymous Quiz
6%
The time required to irrigate
24%
The depth of water applied
12%
The area of land irrigated
58%
The relationship between stream size, time, and water depth
2721)What is the most common use of a 90º V-notch weir?
Anonymous Quiz
9%
To measure high flow in large rivers
86%
To measure small and medium streams
6%
To control water pressure in canals
0%
To irrigate crops
2722)What is a Cut-throat flume used for?
Anonymous Quiz
0%
To store water
44%
To measure water flow
56%
To control irrigation water
0%
To purify water
2723)In the Velocity-area method, what is the key factor that affects the flow rate calculation?
Anonymous Quiz
3%
Soil type
86%
Cross-sectional area of the stream
11%
Crop water requirement
0%
Evaporation rate
2724)Which water measurement method does not require fixed structures?
Anonymous Quiz
16%
Volumetric method
59%
Tracer method
16%
Water meter method
8%
Velocity-area method
2725)Which of the following is a disadvantage of poor irrigation scheduling?
Anonymous Quiz
10%
Efficient water use
3%
Increased crop yield
87%
Decreased production per unit of water
0%
Increased soil fertility