39764139
Descripción
Test por Sergio Olvera, actualizado hace 3 meses
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Creado por Sergio Olvera
hace 3 meses
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Pregunta 1
Pregunta
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?
Respuesta
-
1.433
-
0.433
-
12.133
-
6.733
Pregunta 2
Pregunta
Does container shape make a difference in static pressure situation?
Respuesta
-
Yes
-
No
-
Need more info
-
Hard to calculate
Pregunta 3
Pregunta
Based on the elevation on the above diagram, the PSI at the bottom of each container is:
Respuesta
-
Different
-
Same
-
Unknown
-
Need to calculate
Pregunta 4
Pregunta
In an irrigation system, what are the correct types of water pressure?
Respuesta
-
Dynamic Pressure
-
Static Pressure
-
Dynasty Pressure
-
Symbolic Pressure
Pregunta 5
Pregunta
How many gallons of water are in one-acre foot?
Respuesta
-
42,563
-
1
-
325,851
-
43,566
Pregunta 6
Pregunta
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?
Respuesta
-
GPM
-
Feet of Head
-
Feet of Pipe
-
Feet Per Second
Pregunta 7
Pregunta
If the pressure at the sprinkler is higher than what's recommended, it can lead to:
Respuesta
-
Uniform distribution of water
-
Misting of water at the sprinkler
-
Decreased water cost.
-
Best Precipitation Rate
Pregunta 8
Pregunta
Chose two correct ways to create pressure in irrigation systems.
Respuesta
-
Elevation
-
Booster Pump
-
Static Pressure
-
Dynamic Pressure
Pregunta 9
Pregunta
Static Pressure is not affected by size or material of pipe, tank, or reservoir.
Respuesta
- True
- False
Pregunta 10
Pregunta
Pressure in a pipe when no water is flowing (water is at rest) is called:
Respuesta
-
Static pressure
-
Dynamic pressure
-
Friction loss
-
Velocity
Pregunta 11
Pregunta
If the pressure at the base of a water column is 50 psi, then how high is the water column?
Respuesta
-
138.6FT
-
126.4FT
-
112.6 FT
-
115.5 FT
Pregunta 12
Respuesta
-
71.34
-
75.06
-
72.98
-
74.96
Pregunta 13
Pregunta
What will be pressure at the base of this pipe?
Respuesta
-
16.63
-
17.32
-
17.49
-
18.78
Pregunta 14
Pregunta
One PSI equals 2.31 feet of head, and one foot of head equals 0.433 PSI.
Respuesta
- True
- False
Pregunta 15
Respuesta
-
82.47 PSI
-
101.96 PSI
-
90.15 PSI
-
92.48 PSI
Pregunta 16
Respuesta
-
90.93 PSI
-
91.92 PSI
-
90.93 Feet of Head
-
91.92 Feet of Head
Pregunta 17
Pregunta
What is the only factor that affects Static Pressure?
Respuesta
-
Elevation
-
Velocity
-
Size of pipe
-
Flow
Pregunta 18
Pregunta
Only changes in elevation impact static pressure.
Respuesta
- True
- False
Pregunta 19
Pregunta
Flow and Velocity is the same measurement of water volume (amount).
Respuesta
- True
- False
Pregunta 20
Pregunta
When water moves through an irrigation system it is said to be in
a [blank_start]_________[blank_end] state.
Respuesta
-
Dynamic
-
Static
-
High Pressure
-
Frozen
Pregunta 21
Pregunta
Flow is commonly measured in [blank_start]______[blank_end] for sprinkler systems and in [blank_start]_____[blank_end] for drip irrigation systems.
Respuesta
-
GOM
-
GPM
-
GPH
-
PSI
-
GOM
-
GPH
-
GPM
-
PSI
Pregunta 22
Pregunta
Flow is the amount (volume) of water moving per unit of time. Measured in GPH and GPM
Respuesta
- True
- False
Pregunta 23
Pregunta
Velocity is the speed of moving water. Measured in:
Respuesta
-
Feet Per Second (FPS)
-
Gallons Per Hour (GPH)
-
Gallons Per Minute (GPM)
-
Weight Of Water (WOW)
Pregunta 24
Pregunta
The faster the water moves trough the pipes, the better the sprinklers work.
Respuesta
- True
- False
Pregunta 25
Pregunta
The optimal water velocity is:
Respuesta
-
25 (FPS)
-
15 (FPS)
-
10 (FPS)
-
5 (FPS)
Pregunta 26
Pregunta
The primary causes of water hammer include a combination of:
Respuesta
-
When water is suddenly stopped.
-
When water suddenly changes direction.
-
When water moves too fast.
-
When pressure is too low
-
Air pockets in the system
Pregunta 27
Respuesta
-
To determine the pressure loss in pipe due to friction losses
-
To determine the velocity at various flow rates
-
To find the maximum allowable flow of water in gallons per minute per pipe size
-
To find the optimal pressure (PSI) per rotor head
Pregunta 28
Pregunta
Why is an Ohms test commonly performed?
Respuesta
-
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
-
To check how many solenoids are on he line
-
To test the voltage of the solenoid
Pregunta 29
Pregunta
The voltage of a solenoid can be found by conducting an Ohms test?
Respuesta
- True
- False
Pregunta 30
Pregunta
Both AC and DC latching solenoids can be used in a 24v conventional controller.
Image:
Grid (binary/octet-stream)
Respuesta
- True
- False
Pregunta 31
Pregunta
What does AC stand for?
Respuesta
-
Alternative Current
-
Alternating Voltage
-
Alternating Current
-
Advancing Circuit
Pregunta 32
Pregunta
What is the most common Voltage used when turning on an irrigation valve
Respuesta
-
24 DC Volts
-
24 AC Volts
-
124 AC Volts
-
9 DC Volts
Pregunta 33
Respuesta
-
Amps in the line
-
Resistance in the line
-
Voltage in the line
-
Resistance in the transformer
Pregunta 34
Pregunta
The nominal voltage for an irrigation controller, particularly one designed to operate with standard 24V AC solenoids, should typically be within the range of
Respuesta
-
22 to 28 Volts DC.
-
22 to 28 Volts AC.
-
9-12 Volts AC
-
9-12 Volts DC
Pregunta 35
Pregunta
When doing an Ohms test and finding a reading between 20-60 Ohms means we have....
Respuesta
-
A broken/cut wire.
-
A bad wire splice.
-
A good line/solenoid.
-
A short on the wire path.
Pregunta 36
Pregunta
When conducting an Ohms test. A bad wire splice will be referred as...
Respuesta
-
Open wire
-
Partial
-
Cut wire
-
Good wire
Pregunta 37
Pregunta
A ground fault is..
Respuesta
-
Earth contact with any part of the wire
-
a wire splice
-
an insulated solenoid
-
a disconnected controller
Pregunta 38
Pregunta
Precipitation rate in a landscape irrigation system refers to the amount of water applied per unit area per unit time.
Respuesta
- True
- False
Pregunta 39
Pregunta
What is the primary purpose of knowing the precipitation rate of a landscape irrigation system?
Respuesta
-
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.
Pregunta 40
Pregunta
When the nozzles in sprinklers are mixed, it can lead to several issues:
Respuesta
-
Uneven water distribution
-
Reduced efficiency
-
Damage to plants
-
Increased turf health
-
Optimal performance
Pregunta 41
Pregunta
What can happen when the nozzles in sprinklers are mixed?
Respuesta
-
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.
Pregunta 42
Pregunta
Sprinkler head to head spacing refers to:
Respuesta
-
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.
Pregunta 43
Pregunta
Which of the following factors would NOT influence sprinkler head spacing in a landscape irrigation system?
Respuesta
-
Sprinkler type
-
Soil type
-
Water pressure
-
Wind conditions
Pregunta 44
Pregunta
Why is it important to monitor soil moisture levels when scheduling irrigation?
Respuesta
-
To ensure plants receive adequate nutrients.
-
To calculate the best day to water the plant material
-
To prevent under/overwatering
-
To prevent the sprinklers from working properly
Pregunta 45
Pregunta
Which of the following is NOT a characteristic of an efficient irrigation schedule?
Respuesta
-
Customized to your specific landscape
-
Same and unchanging
-
Weather-based adjustments
-
Soil moisture monitoring
Pregunta 46
Pregunta
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?
Image:
Runoff (binary/octet-stream)
Respuesta
-
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.
Pregunta 47
Pregunta
What is the combined process of evaporation and transpiration in landscape irrigation systems?
Respuesta
-
Precipitation Rates
-
Leaching
-
Evapotranspiration
-
Water Runoff
Pregunta 48
Pregunta
Why is understanding evapotranspiration important for landscape irrigation?
Respuesta
-
To determine the type of sprinkler heads to use
-
To estimate water needs for plants
-
To calculate the cost of water
-
To prevent soil erosion
Pregunta 49
Pregunta
Which of the following factors does NOT affect evapotranspiration rates?
Respuesta
-
Temperature
-
Humidity
-
Soil type
-
Wind
Pregunta 50
Pregunta
How can understanding evapotranspiration help you improve your landscape irrigation practices?
Respuesta
-
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
Pregunta 51
Pregunta
What is the primary purpose of an irrigation system?
Respuesta
-
To fertilize the soil
-
To control weeds
-
To provide water to plants efficiently
-
To prevent soil erosion
Pregunta 52
Pregunta
Which soil type has the highest water-holding capacity?
Respuesta
-
Sandy soil
-
Silt soil
-
Clay soil
-
Loamy soil
Pregunta 53
Pregunta
What is the function of a backflow preventer in an irrigation system?
Image:
825 Ya (binary/octet-stream)
Respuesta
-
To reduce water pressure
-
To prevent water from flowing backward and contaminating the potable water supply
-
To increase the flow rate
-
To filter sediment from water
Pregunta 54
Pregunta
What is the primary purpose of a pressure regulator in an irrigation system?
Respuesta
-
To increase water pressure
-
To maintain a consistent pressure level within the system
-
To filter out debris
-
To control the flow rate
Pregunta 55
Pregunta
What is the purpose of a "zone" in an irrigation system?
Respuesta
-
To divide the area into manageable sections for watering
-
To increase water pressure
-
To reduce water consumption
-
To control the water temperature
Pregunta 56
Pregunta
What does the term "solenoid" refer to in an irrigation valve?
Image:
Grid (binary/octet-stream)
Respuesta
-
A mechanical component that controls water flow
-
An electrical device that opens and closes the valve
-
A type of pipe fitting
-
A tool used for trenching
Pregunta 57
Pregunta
Which of the following is a common problem with irrigation controllers?
Respuesta
-
Power surges
-
Incorrect programming
-
High water pressure
-
Overgrown grass
Pregunta 58
Pregunta
Which of the following best describes the term "water window" in irrigation?
Respuesta
-
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
Pregunta 59
Pregunta
Irrigation is primarily intended to:
Respuesta
-
Directly water plants
-
Replenish the water source for plants
-
Prevent soil erosion
-
Control weeds
Pregunta 60
Pregunta
To effectively manage water in the root zone and program an irrigation controller correctly, which of the following factors should be considered?
Respuesta
-
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
Pregunta 61
Pregunta
The precipitation rate of a sprinkler or a zone in a sprinkler system is defined as:
Respuesta
-
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
Pregunta 62
Pregunta
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)
Respuesta
-
1-2 day interval
-
3-4 day interval
-
5-6 day interval
-
There is not enough information to calculate the watering frequency
Pregunta 63
Pregunta
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)
Respuesta
-
16 minutes
-
29 minutes
-
47 minutes
-
There is not enough information to determine the run time
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