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Advanced Irrigation Exam

Description

A comprehensive exam, designed to evaluate the irrigation knowledge and skills of professionals seeking to advance their expertise in advanced landscape irrigation techniques.
Sergio Olvera
Quiz by Sergio Olvera, updated 3 months ago
Sergio Olvera
Created by Sergio Olvera 3 months ago
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Resource summary

Question 1

Question
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?
Image:
2024 08 21 054024 (binary/octet-stream)
Answer
  • 1.433
  • 0.433
  • 12.133
  • 6.733

Question 2

Question
Does container shape make a difference in static pressure situation?
Image:
2024 08 21 055506 (binary/octet-stream)
Answer
  • Yes
  • No
  • Need more info
  • Hard to calculate

Question 3

Question
Based on the elevation on the above diagram, the PSI at the bottom of each container is:
Image:
2024 08 21 055855 (binary/octet-stream)
Answer
  • Different
  • Same
  • Unknown
  • Need to calculate

Question 4

Question
In an irrigation system, what are the correct types of water pressure?
Answer
  • Dynamic Pressure
  • Static Pressure
  • Dynasty Pressure
  • Symbolic Pressure

Question 5

Question
How many gallons of water are in one-acre foot?
Answer
  • 42,563
  • 1
  • 325,851
  • 43,566

Question 6

Question
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?
Answer
  • GPM
  • Feet of Head
  • Feet of Pipe
  • Feet Per Second

Question 7

Question
If the pressure at the sprinkler is higher than what's recommended, it can lead to:
Answer
  • Uniform distribution of water
  • Misting of water at the sprinkler
  • Decreased water cost.
  • Best Precipitation Rate

Question 8

Question
Chose two correct ways to create pressure in irrigation systems.
Answer
  • Elevation
  • Booster Pump
  • Static Pressure
  • Dynamic Pressure

Question 9

Question
Static Pressure is not affected by size or material of pipe, tank, or reservoir.
Answer
  • True
  • False

Question 10

Question
Pressure in a pipe when no water is flowing (water is at rest) is called:
Answer
  • Static pressure
  • Dynamic pressure
  • Friction loss
  • Velocity

Question 11

Question
If the pressure at the base of a water column is 50 psi, then how high is the water column?
Image:
2024 08 21 054024 (binary/octet-stream)
Answer
  • 138.6FT
  • 126.4FT
  • 112.6 FT
  • 115.5 FT

Question 12

Question
What is the static pressure at the valve?
Image:
2024 08 21 115716 (binary/octet-stream)
Answer
  • 71.34
  • 75.06
  • 72.98
  • 74.96

Question 13

Question
What will be pressure at the base of this pipe?
Image:
2024 08 21 125918 (binary/octet-stream)
Answer
  • 16.63
  • 17.32
  • 17.49
  • 18.78

Question 14

Question
One PSI equals 2.31 feet of head, and one foot of head equals 0.433 PSI.
Answer
  • True
  • False

Question 15

Question
Calculate the static pressure at the valve.
Image:
2024 08 21 131112 (binary/octet-stream)
Answer
  • 82.47 PSI
  • 101.96 PSI
  • 90.15 PSI
  • 92.48 PSI

Question 16

Question
What is the static pressure at the valve?
Image:
2024 08 22 050838 (binary/octet-stream)
Answer
  • 90.93 PSI
  • 91.92 PSI
  • 90.93 Feet of Head
  • 91.92 Feet of Head

Question 17

Question
What is the only factor that affects Static Pressure?
Answer
  • Elevation
  • Velocity
  • Size of pipe
  • Flow

Question 18

Question
Only changes in elevation impact static pressure.
Answer
  • True
  • False

Question 19

Question
Flow and Velocity is the same measurement of water volume (amount).
Answer
  • True
  • False

Question 20

Question
When water moves through an irrigation system it is said to be in a [blank_start]_________[blank_end] state.
Answer
  • Dynamic
  • Static
  • High Pressure
  • Frozen

Question 21

Question
Flow is commonly measured in [blank_start]______[blank_end] for sprinkler systems and in [blank_start]_____[blank_end] for drip irrigation systems.
Answer
  • GOM
  • GPM
  • GPH
  • PSI
  • GOM
  • GPH
  • GPM
  • PSI

Question 22

Question
Flow is the amount (volume) of water moving per unit of time. Measured in GPH and GPM
Answer
  • True
  • False

Question 23

Question
Velocity is the speed of moving water. Measured in:
Answer
  • Feet Per Second (FPS)
  • Gallons Per Hour (GPH)
  • Gallons Per Minute (GPM)
  • Weight Of Water (WOW)

Question 24

Question
The faster the water moves trough the pipes, the better the sprinklers work.
Answer
  • True
  • False

Question 25

Question
The optimal water velocity is:
Answer
  • 25 (FPS)
  • 15 (FPS)
  • 10 (FPS)
  • 5 (FPS)

Question 26

Question
The primary causes of water hammer include a combination of:
Answer
  • 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

Question 27

Question
What are the Friction Loss Charts used for?
Image:
2024 08 22 064309 (binary/octet-stream)
Answer
  • 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

Question 28

Question
Why is an Ohms test commonly performed?
Answer
  • 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

Question 29

Question
The voltage of a solenoid can be found by conducting an Ohms test?
Answer
  • True
  • False

Question 30

Question
Both AC and DC latching solenoids can be used in a 24v conventional controller.
Image:
Grid (binary/octet-stream)
Answer
  • True
  • False

Question 31

Question
What does AC stand for?
Answer
  • Alternative Current
  • Alternating Voltage
  • Alternating Current
  • Advancing Circuit

Question 32

Question
What is the most common Voltage used when turning on an irrigation valve
Answer
  • 24 DC Volts
  • 24 AC Volts
  • 124 AC Volts
  • 9 DC Volts

Question 33

Question
Ohms is the measurement of the...
Image:
2024 08 22 081402 (binary/octet-stream)
Answer
  • Amps in the line
  • Resistance in the line
  • Voltage in the line
  • Resistance in the transformer

Question 34

Question
The nominal voltage for an irrigation controller, particularly one designed to operate with standard 24V AC solenoids, should typically be within the range of
Image:
Esp Lxd Programming (binary/octet-stream)
Answer
  • 22 to 28 Volts DC.
  • 22 to 28 Volts AC.
  • 9-12 Volts AC
  • 9-12 Volts DC

Question 35

Question
When doing an Ohms test and finding a reading between 20-60 Ohms means we have....
Image:
2024 08 22 083001 (binary/octet-stream)
Answer
  • A broken/cut wire.
  • A bad wire splice.
  • A good line/solenoid.
  • A short on the wire path.

Question 36

Question
When conducting an Ohms test. A bad wire splice will be referred as...
Image:
2024 08 22 083319 (binary/octet-stream)
Answer
  • Open wire
  • Partial
  • Cut wire
  • Good wire

Question 37

Question
A ground fault is..
Answer
  • Earth contact with any part of the wire
  • a wire splice
  • an insulated solenoid
  • a disconnected controller

Question 38

Question
Precipitation rate in a landscape irrigation system refers to the amount of water applied per unit area per unit time.
Answer
  • True
  • False

Question 39

Question
What is the primary purpose of knowing the precipitation rate of a landscape irrigation system?
Image:
Sprinklers 0 (binary/octet-stream)
Answer
  • 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.

Question 40

Question
When the nozzles in sprinklers are mixed, it can lead to several issues:
Answer
  • Uneven water distribution
  • Reduced efficiency
  • Damage to plants
  • Increased turf health
  • Optimal performance

Question 41

Question
What can happen when the nozzles in sprinklers are mixed?
Image:
Nozzles (binary/octet-stream)
Answer
  • 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.

Question 42

Question
Sprinkler head to head spacing refers to:
Answer
  • 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.

Question 43

Question
Which of the following factors would NOT influence sprinkler head spacing in a landscape irrigation system?
Answer
  • Sprinkler type
  • Soil type
  • Water pressure
  • Wind conditions

Question 44

Question
Why is it important to monitor soil moisture levels when scheduling irrigation?
Image:
29122 Original (binary/octet-stream)
Answer
  • 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

Question 45

Question
Which of the following is NOT a characteristic of an efficient irrigation schedule?
Answer
  • Customized to your specific landscape
  • Same and unchanging
  • Weather-based adjustments
  • Soil moisture monitoring

Question 46

Question
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)
Answer
  • 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.

Question 47

Question
What is the combined process of evaporation and transpiration in landscape irrigation systems?
Answer
  • Precipitation Rates
  • Leaching
  • Evapotranspiration
  • Water Runoff

Question 48

Question
Why is understanding evapotranspiration important for landscape irrigation?
Answer
  • 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

Question 49

Question
Which of the following factors does NOT affect evapotranspiration rates?
Answer
  • Temperature
  • Humidity
  • Soil type
  • Wind

Question 50

Question
How can understanding evapotranspiration help you improve your landscape irrigation practices?
Answer
  • 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

Question 51

Question
What is the primary purpose of an irrigation system?
Answer
  • To fertilize the soil
  • To control weeds
  • To provide water to plants efficiently
  • To prevent soil erosion

Question 52

Question
Which soil type has the highest water-holding capacity?
Image:
Types Of Soil (binary/octet-stream)
Answer
  • Sandy soil
  • Silt soil
  • Clay soil
  • Loamy soil

Question 53

Question
What is the function of a backflow preventer in an irrigation system?
Image:
825 Ya (binary/octet-stream)
Answer
  • 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

Question 54

Question
What is the primary purpose of a pressure regulator in an irrigation system?
Image:
2024 08 27 065444 (binary/octet-stream)
Answer
  • To increase water pressure
  • To maintain a consistent pressure level within the system
  • To filter out debris
  • To control the flow rate

Question 55

Question
What is the purpose of a "zone" in an irrigation system?
Answer
  • To divide the area into manageable sections for watering
  • To increase water pressure
  • To reduce water consumption
  • To control the water temperature

Question 56

Question
What does the term "solenoid" refer to in an irrigation valve?
Image:
Grid (binary/octet-stream)
Answer
  • 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

Question 57

Question
Which of the following is a common problem with irrigation controllers?
Image:
Esp Lxd Programming (binary/octet-stream)
Answer
  • Power surges
  • Incorrect programming
  • High water pressure
  • Overgrown grass

Question 58

Question
Which of the following best describes the term "water window" in irrigation?
Answer
  • 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

Question 59

Question
Irrigation is primarily intended to:
Answer
  • Directly water plants
  • Replenish the water source for plants
  • Prevent soil erosion
  • Control weeds

Question 60

Question
To effectively manage water in the root zone and program an irrigation controller correctly, which of the following factors should be considered?
Answer
  • 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

Question 61

Question
The precipitation rate of a sprinkler or a zone in a sprinkler system is defined as:
Answer
  • 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

Question 62

Question
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)
Answer
  • 1-2 day interval
  • 3-4 day interval
  • 5-6 day interval
  • There is not enough information to calculate the watering frequency

Question 63

Question
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)
Answer
  • 16 minutes
  • 29 minutes
  • 47 minutes
  • There is not enough information to determine the run time
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