Questão 1
Questão
Based on the equation of elevation x the constant PSI per foot. What is the total weight in pounds per square inch at the bottom of the 12 in.-high column?
Questão 2
Questão
Does container shape make a difference in static pressure situation?
Responda
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Yes
-
No
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Need more info
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Hard to calculate
Questão 3
Questão
Based on the elevation on the above diagram, the PSI at the bottom of each container is:
Responda
-
Different
-
Same
-
Unknown
-
Need to calculate
Questão 4
Questão
In an irrigation system, what are the correct types of water pressure?
Responda
-
Dynamic Pressure
-
Static Pressure
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Dynasty Pressure
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Symbolic Pressure
Questão 5
Questão
How many gallons of water are in one-acre foot?
Questão 6
Questão
Which of the following is a unit of pressure measurement that refers to the vertical distance between a liquid's surface and a point at which pressure is being measured?
Responda
-
GPM
-
Feet of Head
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Feet of Pipe
-
Feet Per Second
Questão 7
Questão
If the pressure at the sprinkler is higher than what's recommended, it can lead to:
Questão 8
Questão
Chose two correct ways to create pressure in irrigation systems.
Responda
-
Elevation
-
Booster Pump
-
Static Pressure
-
Dynamic Pressure
Questão 9
Questão
Static Pressure is not affected by size or material of pipe, tank, or reservoir.
Questão 10
Questão
Pressure in a pipe when no water is flowing (water is at rest) is called:
Responda
-
Static pressure
-
Dynamic pressure
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Friction loss
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Velocity
Questão 11
Questão
If the pressure at the base of a water column is 50 psi, then how high is the water column?
Responda
-
138.6FT
-
126.4FT
-
112.6 FT
-
115.5 FT
Questão 12
Questão
What is the static pressure at the valve?
Questão 13
Questão
What will be pressure at the base of this pipe?
Questão 14
Questão
One PSI equals 2.31 feet of head, and one foot of head equals 0.433 PSI.
Questão 15
Questão
Calculate the static pressure at the valve.
Responda
-
82.47 PSI
-
101.96 PSI
-
90.15 PSI
-
92.48 PSI
Questão 16
Questão
What is the static pressure at the valve?
Responda
-
90.93 PSI
-
91.92 PSI
-
90.93 Feet of Head
-
91.92 Feet of Head
Questão 17
Questão
What is the only factor that affects Static Pressure?
Responda
-
Elevation
-
Velocity
-
Size of pipe
-
Flow
Questão 18
Questão
Only changes in elevation impact static pressure.
Questão 19
Questão
Flow and Velocity is the same measurement of water volume (amount).
Questão 20
Questão
When water moves through an irrigation system it is said to be in
a [blank_start]_________[blank_end] state.
Responda
-
Dynamic
-
Static
-
High Pressure
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Frozen
Questão 21
Questão
Flow is commonly measured in [blank_start]______[blank_end] for sprinkler systems and in [blank_start]_____[blank_end] for drip irrigation systems.
Responda
-
GOM
-
GPM
-
GPH
-
PSI
-
GOM
-
GPH
-
GPM
-
PSI
Questão 22
Questão
Flow is the amount (volume) of water moving per unit of time. Measured in GPH and GPM
Questão 23
Questão
Velocity is the speed of moving water. Measured in:
Responda
-
Feet Per Second (FPS)
-
Gallons Per Hour (GPH)
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Gallons Per Minute (GPM)
-
Weight Of Water (WOW)
Questão 24
Questão
The faster the water moves trough the pipes, the better the sprinklers work.
Questão 25
Questão
The optimal water velocity is:
Responda
-
25 (FPS)
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15 (FPS)
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10 (FPS)
-
5 (FPS)
Questão 26
Questão
The primary causes of water hammer include a combination of:
Responda
-
When water is suddenly stopped.
-
When water suddenly changes direction.
-
When water moves too fast.
-
When pressure is too low
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Air pockets in the system
Questão 27
Questão
What are the Friction Loss Charts used for?
Responda
-
To determine the pressure loss in pipe due to friction losses
-
To determine the velocity at various flow rates
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To find the maximum allowable flow of water in gallons per minute per pipe size
-
To find the optimal pressure (PSI) per rotor head
Questão 28
Questão
Why is an Ohms test commonly performed?
Responda
-
To measure the electrical resistance in the system wiring, identifying potential issues like faulty solenoids or damaged wires.
-
To test the voltage at the transformer
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To check how many solenoids are on he line
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To test the voltage of the solenoid
Questão 29
Questão
The voltage of a solenoid can be found by conducting an Ohms test?
Questão 30
Questão
Both AC and DC latching solenoids can be used in a 24v conventional controller.
Questão 31
Questão
What does AC stand for?
Responda
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Alternative Current
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Alternating Voltage
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Alternating Current
-
Advancing Circuit
Questão 32
Questão
What is the most common Voltage used when turning on an irrigation valve
Responda
-
24 DC Volts
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24 AC Volts
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124 AC Volts
-
9 DC Volts
Questão 33
Questão
Ohms is the measurement of the...
Questão 34
Questão
The nominal voltage for an irrigation controller, particularly one designed to operate with standard 24V AC solenoids, should typically be within the range of
Responda
-
22 to 28 Volts DC.
-
22 to 28 Volts AC.
-
9-12 Volts AC
-
9-12 Volts DC
Questão 35
Questão
When doing an Ohms test and finding a reading between 20-60 Ohms means we have....
Questão 36
Questão
When conducting an Ohms test. A bad wire splice will be referred as...
Responda
-
Open wire
-
Partial
-
Cut wire
-
Good wire
Questão 37
Questão
A ground fault is..
Questão 38
Questão
Precipitation rate in a landscape irrigation system refers to the amount of water applied per unit area per unit time.
Questão 39
Questão
What is the primary purpose of knowing the precipitation rate of a landscape irrigation system?
Responda
-
To determine the soil's pH level.
-
To calculate the electrical load on the irrigation controller.
-
To make sure the system uses just the right amount of water, avoiding both overwatering and underwatering.
-
To measure the flow rate of water through the main supply line.
Questão 40
Questão
When the nozzles in sprinklers are mixed, it can lead to several issues:
Questão 41
Questão
What can happen when the nozzles in sprinklers are mixed?
Responda
-
Improved water coverage and efficiency.
-
Reduced water usage and lower costs.
-
Uneven water distribution and potential plant damage.
-
Increased water pressure and higher flow rates.
Questão 42
Questão
Sprinkler head to head spacing refers to:
Responda
-
The distance between sprinkler heads in a landscape irrigation system.
-
The height of the sprinkler heads above the ground.
-
The type of nozzle used in the sprinkler heads.
-
The water pressure required for the sprinkler system.
Questão 43
Questão
Which of the following factors would NOT influence sprinkler head spacing in a landscape irrigation system?
Responda
-
Sprinkler type
-
Soil type
-
Water pressure
-
Wind conditions
Questão 44
Questão
Why is it important to monitor soil moisture levels when scheduling irrigation?
Responda
-
To ensure plants receive adequate nutrients.
-
To calculate the best day to water the plant material
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To prevent under/overwatering
-
To prevent the sprinklers from working properly
Questão 45
Questão
Which of the following is NOT a characteristic of an efficient irrigation schedule?
Questão 46
Questão
You have a landscape irrigation system that is currently overwatering your turf. Which of the following adjustments would likely be most effective in reducing water consumption without compromising plant health?
Responda
-
Increase the water pressure by changing a few nozzles.
-
Increase the frequency of irrigation cycles by 50%.
-
Reduce the frequency and duration of irrigation cycles.
-
Replace your existing sprinklers with a drip irrigation system.
Questão 47
Questão
What is the combined process of evaporation and transpiration in landscape irrigation systems?
Responda
-
Precipitation Rates
-
Leaching
-
Evapotranspiration
-
Water Runoff
Questão 48
Questão
Why is understanding evapotranspiration important for landscape irrigation?
Responda
-
To determine the type of sprinkler heads to use
-
To estimate water needs for plants
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To calculate the cost of water
-
To prevent soil erosion
Questão 49
Questão
Which of the following factors does NOT affect evapotranspiration rates?
Responda
-
Temperature
-
Humidity
-
Soil type
-
Wind
Questão 50
Questão
How can understanding evapotranspiration help you improve your landscape irrigation practices?
Responda
-
By reducing the frequency of watering
-
By increasing the amount of water applied
-
By optimizing your irrigation schedule
-
By changing the type of plants you grow
Questão 51
Questão
What is the primary purpose of an irrigation system?
Questão 52
Questão
Which soil type has the highest water-holding capacity?
Responda
-
Sandy soil
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Silt soil
-
Clay soil
-
Loamy soil
Questão 53
Questão
What is the function of a backflow preventer in an irrigation system?
Responda
-
To reduce water pressure
-
To prevent water from flowing backward and contaminating the potable water supply
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To increase the flow rate
-
To filter sediment from water
Questão 54
Questão
What is the primary purpose of a pressure regulator in an irrigation system?
Questão 55
Questão
What is the purpose of a "zone" in an irrigation system?
Responda
-
To divide the area into manageable sections for watering
-
To increase water pressure
-
To reduce water consumption
-
To control the water temperature
Questão 56
Questão
What does the term "solenoid" refer to in an irrigation valve?
Responda
-
A mechanical component that controls water flow
-
An electrical device that opens and closes the valve
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A type of pipe fitting
-
A tool used for trenching
Questão 57
Questão
Which of the following is a common problem with irrigation controllers?
Responda
-
Power surges
-
Incorrect programming
-
High water pressure
-
Overgrown grass
Questão 58
Questão
Which of the following best describes the term "water window" in irrigation?
Responda
-
The time frame in which irrigation is allowed to run
-
The maximum amount of water that can be applied at one time
-
The period during which the system is checked for leaks
-
The optimal time to check soil moisture
Questão 59
Questão
Irrigation is primarily intended to:
Questão 60
Questão
To effectively manage water in the root zone and program an irrigation controller correctly, which of the following factors should be considered?
Responda
-
Amount of water needed for plants
-
Acceptable level of soil moisture depletion
-
Application rate of the irrigation system
-
Efficiency of the irrigation system
-
All of the above
Questão 61
Questão
The precipitation rate of a sprinkler or a zone in a sprinkler system is defined as:
Responda
-
The amount of water applied that is available in the root zone
-
The rate at which water is applied over a given area, measured in inches per hour
-
The specific water requirement of the plant
-
The overall efficiency of the sprinkler system
Questão 62
Questão
Use the following to calculate the Watering Frequency:
Watering cool season turf with an 8-inch (0.66 ft) root zone, and a crop coefficient of 0.70. Soil is clay loam with available water of 1.00 in/ft with a slight slope. Precipitation rate is 0.5 in/hr. Your location has a daily moisture loss (ET) rate of 0.12 inches. The application efficiency is 68%. MAD = 50%
Frequency = (AW x RZ x MAD) / (ET x Kc)
Questão 63
Questão
Use the same values to calculate the Run Time per interval:
Watering cool season turf with an 8-inch (0.66 ft) root zone, and a crop coefficient of 0.70. Soil is clay loam with available water of 1.00 in/ft with a slight slope. Precipitation rate is 0.5 in/hr. Your location has a daily moisture loss (ET) rate of 0.12 inches. The application efficiency is 68%. MAD = 50%. Use a 2-day interval.
Run Time = (60 x F x ET x Kc) / (PR x EA)