Advanced Irrigation Exam

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Question 1 of 63

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?

Select one of the following:

1.433
0.433
12.133
6.733

Explanation

Question 2 of 63

Does container shape make a difference in static pressure situation?

Select one of the following:

Yes
No
Need more info
Hard to calculate

Explanation

Question 3 of 63

Based on the elevation on the above diagram, the PSI at the bottom of each container is:

Select one of the following:

Different
Same
Unknown
Need to calculate

Explanation

Question 4 of 63

In an irrigation system, what are the correct types of water pressure?

Select one or more of the following:

Dynamic Pressure
Static Pressure
Dynasty Pressure
Symbolic Pressure

Explanation

Question 5 of 63

How many gallons of water are in one-acre foot?

Select one of the following:

42,563
1
325,851
43,566

Explanation

Question 6 of 63

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?

Select one of the following:

GPM
Feet of Head
Feet of Pipe
Feet Per Second

Explanation

Question 7 of 63

If the pressure at the sprinkler is higher than what's recommended, it can lead to:

Select one of the following:

Uniform distribution of water
Misting of water at the sprinkler
Decreased water cost.
Best Precipitation Rate

Explanation

Question 8 of 63

Chose two correct ways to create pressure in irrigation systems.

Select one or more of the following:

Elevation
Booster Pump
Static Pressure
Dynamic Pressure

Explanation

Question 9 of 63

Static Pressure is not affected by size or material of pipe, tank, or reservoir.

Select one of the following:

True
False

Explanation

Question 10 of 63

Pressure in a pipe when no water is flowing (water is at rest) is called:

Select one of the following:

Static pressure
Dynamic pressure
Friction loss
Velocity

Explanation

Question 11 of 63

If the pressure at the base of a water column is 50 psi, then how high is the water column?

Select one of the following:

138.6FT
126.4FT
112.6 FT
115.5 FT

Explanation

Question 12 of 63

What is the static pressure at the valve?

Select one of the following:

71.34
75.06
72.98
74.96

Explanation

Question 13 of 63

What will be pressure at the base of this pipe?

Select one of the following:

16.63
17.32
17.49
18.78

Explanation

Question 14 of 63

One PSI equals 2.31 feet of head, and one foot of head equals 0.433 PSI.

Select one of the following:

True
False

Explanation

Question 15 of 63

Calculate the static pressure at the valve.

Select one of the following:

82.47 PSI
101.96 PSI
90.15 PSI
92.48 PSI

Explanation

Question 16 of 63

What is the static pressure at the valve?

Select one of the following:

90.93 PSI
91.92 PSI
90.93 Feet of Head
91.92 Feet of Head

Explanation

Question 17 of 63

What is the only factor that affects Static Pressure?

Select one of the following:

Elevation
Velocity
Size of pipe
Flow

Explanation

Question 18 of 63

Only changes in elevation impact static pressure.

Select one of the following:

True
False

Explanation

Question 19 of 63

Flow and Velocity is the same measurement of water volume (amount).

Select one of the following:

True
False

Explanation

Question 20 of 63

Select from the dropdown list to complete the text.

When water moves through an irrigation system it is said to be in
a ( Dynamic, Static, High Pressure, Frozen ) state.

Explanation

Question 21 of 63

Select from the dropdown lists to complete the text.

Flow is commonly measured in ( GOM, GPM, GPH, PSI ) for sprinkler systems and in ( GOM, GPH, GPM, PSI ) for drip irrigation systems.

Explanation

Question 22 of 63

Flow is the amount (volume) of water moving per unit of time. Measured in GPH and GPM

Select one of the following:

True
False

Explanation

Question 23 of 63

Velocity is the speed of moving water. Measured in:

Select one of the following:

Feet Per Second (FPS)
Gallons Per Hour (GPH)
Gallons Per Minute (GPM)
Weight Of Water (WOW)

Explanation

Question 24 of 63

The faster the water moves trough the pipes, the better the sprinklers work.

Select one of the following:

True
False

Explanation

Question 25 of 63

The optimal water velocity is:

Select one of the following:

25 (FPS)
15 (FPS)
10 (FPS)
5 (FPS)

Explanation

Question 26 of 63

❌ ^-

The primary causes of water hammer include a combination of:

Select one or more of the following:

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

Explanation

Question 27 of 63

❌ ^-

What are the Friction Loss Charts used for?

Select one or more of the following:

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

Explanation

Question 28 of 63

Why is an Ohms test commonly performed?

Select one of the following:

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

Explanation

Question 29 of 63

The voltage of a solenoid can be found by conducting an Ohms test?

Select one of the following:

True
False

Explanation

Question 30 of 63

Both AC and DC latching solenoids can be used in a 24v conventional controller.

Select one of the following:

True
False

Explanation

Question 31 of 63

What does AC stand for?

Select one of the following:

Alternative Current
Alternating Voltage
Alternating Current
Advancing Circuit

Explanation

Question 32 of 63

What is the most common Voltage used when turning on an irrigation valve

Select one of the following:

24 DC Volts
24 AC Volts
124 AC Volts
9 DC Volts

Explanation

Question 33 of 63

Ohms is the measurement of the...

Select one of the following:

Amps in the line
Resistance in the line
Voltage in the line
Resistance in the transformer

Explanation

Question 34 of 63

The nominal voltage for an irrigation controller, particularly one designed to operate with standard 24V AC solenoids, should typically be within the range of

Select one of the following:

22 to 28 Volts DC.
22 to 28 Volts AC.
9-12 Volts AC
9-12 Volts DC

Explanation

Question 35 of 63

When doing an Ohms test and finding a reading between 20-60 Ohms means we have....

Select one of the following:

A broken/cut wire.
A bad wire splice.
A good line/solenoid.
A short on the wire path.

Explanation

Question 36 of 63

When conducting an Ohms test. A bad wire splice will be referred as...

Select one of the following:

Open wire
Partial
Cut wire
Good wire

Explanation

Question 37 of 63

A ground fault is..

Select one of the following:

Earth contact with any part of the wire
a wire splice
an insulated solenoid
a disconnected controller

Explanation

Question 38 of 63

Precipitation rate in a landscape irrigation system refers to the amount of water applied per unit area per unit time.

Select one of the following:

True
False

Explanation

Question 39 of 63

What is the primary purpose of knowing the precipitation rate of a landscape irrigation system?

Select one of the following:

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.

Explanation

Question 40 of 63

❌ ^-

When the nozzles in sprinklers are mixed, it can lead to several issues:

Select one or more of the following:

Uneven water distribution
Reduced efficiency
Damage to plants
Increased turf health
Optimal performance

Explanation

Question 41 of 63

What can happen when the nozzles in sprinklers are mixed?

Select one of the following:

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.

Explanation

Question 42 of 63

Sprinkler head to head spacing refers to:

Select one of the following:

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.

Explanation

Question 43 of 63

Which of the following factors would NOT influence sprinkler head spacing in a landscape irrigation system?

Select one of the following:

Sprinkler type
Soil type
Water pressure
Wind conditions

Explanation

Question 44 of 63

Why is it important to monitor soil moisture levels when scheduling irrigation?

Select one of the following:

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

Explanation

Question 45 of 63

Which of the following is NOT a characteristic of an efficient irrigation schedule?

Select one of the following:

Customized to your specific landscape
Same and unchanging
Weather-based adjustments
Soil moisture monitoring

Explanation

Question 46 of 63

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?

Select one of the following:

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.

Explanation

Question 47 of 63

What is the combined process of evaporation and transpiration in landscape irrigation systems?

Select one of the following:

Precipitation Rates
Leaching
Evapotranspiration
Water Runoff

Explanation

Question 48 of 63

Why is understanding evapotranspiration important for landscape irrigation?

Select one of the following:

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

Explanation

Question 49 of 63

Which of the following factors does NOT affect evapotranspiration rates?

Select one of the following:

Temperature
Humidity
Soil type
Wind

Explanation

Question 50 of 63

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

Select one of the following:

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

Explanation

Question 51 of 63

What is the primary purpose of an irrigation system?

Select one of the following:

To fertilize the soil
To control weeds
To provide water to plants efficiently
To prevent soil erosion

Explanation

Question 52 of 63

Which soil type has the highest water-holding capacity?

Select one of the following:

Sandy soil
Silt soil
Clay soil
Loamy soil

Explanation

Question 53 of 63

What is the function of a backflow preventer in an irrigation system?

Select one of the following:

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

Explanation

Question 54 of 63

What is the primary purpose of a pressure regulator in an irrigation system?

Select one of the following:

To increase water pressure
To maintain a consistent pressure level within the system
To filter out debris
To control the flow rate

Explanation

Question 55 of 63

What is the purpose of a "zone" in an irrigation system?

Select one of the following:

To divide the area into manageable sections for watering
To increase water pressure
To reduce water consumption
To control the water temperature

Explanation

Question 56 of 63

What does the term "solenoid" refer to in an irrigation valve?

Select one of the following:

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

Explanation

Question 57 of 63

Which of the following is a common problem with irrigation controllers?

Select one of the following:

Power surges
Incorrect programming
High water pressure
Overgrown grass

Explanation

Question 58 of 63

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

Select one of the following:

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

Explanation

Question 59 of 63

Irrigation is primarily intended to:

Select one of the following:

Directly water plants
Replenish the water source for plants
Prevent soil erosion
Control weeds

Explanation

Question 60 of 63

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

Select one of the following:

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

Explanation

Question 61 of 63

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

Select one of the following:

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

Explanation

Question 62 of 63

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)

Select one of the following:

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

Explanation

Question 63 of 63

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)

Select one of the following:

16 minutes
29 minutes
47 minutes
There is not enough information to determine the run time

Explanation

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	Created by Sergio Olvera 4 months ago

A comprehensive exam, designed to evaluate the irrigation knowledge and skills of professionals seeking to advance their expertise in advanced landscape irrigation techniques.

Advanced Irrigation Exam

Question 1 of 63

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?

Select one of the following:

Explanation

Question 2 of 63

Does container shape make a difference in static pressure situation?

Select one of the following:

Explanation

Question 3 of 63

Based on the elevation on the above diagram, the PSI at the bottom of each container is:

Select one of the following:

Explanation

Question 4 of 63

In an irrigation system, what are the correct types of water pressure?

Select one or more of the following:

Explanation

Question 5 of 63

How many gallons of water are in one-acre foot?

Select one of the following:

Explanation

Question 6 of 63

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?

Select one of the following:

Explanation

Question 7 of 63

If the pressure at the sprinkler is higher than what's recommended, it can lead to:

Select one of the following:

Explanation

Question 8 of 63

Chose two correct ways to create pressure in irrigation systems.

Select one or more of the following:

Explanation

Question 9 of 63

Static Pressure is not affected by size or material of pipe, tank, or reservoir.

Select one of the following:

Explanation

Question 10 of 63

Pressure in a pipe when no water is flowing (water is at rest) is called:

Select one of the following:

Explanation

Question 11 of 63

If the pressure at the base of a water column is 50 psi, then how high is the water column?

Select one of the following:

Explanation

Question 12 of 63

What is the static pressure at the valve?

Select one of the following:

Explanation

Question 13 of 63

What will be pressure at the base of this pipe?

Select one of the following:

Explanation

Question 14 of 63

One PSI equals 2.31 feet of head, and one foot of head equals 0.433 PSI.

Select one of the following:

Explanation

Question 15 of 63

Calculate the static pressure at the valve.

Select one of the following:

Explanation

Question 16 of 63

What is the static pressure at the valve?

Select one of the following:

Explanation

Question 17 of 63

What is the only factor that affects Static Pressure?

Select one of the following:

Explanation

Question 18 of 63

Only changes in elevation impact static pressure.

Select one of the following:

Explanation

Question 19 of 63

Flow and Velocity is the same measurement of water volume (amount).

Select one of the following:

Explanation

Question 20 of 63

Select from the dropdown list to complete the text.

When water moves through an irrigation system it is said to be in
a ( Dynamic, Static, High Pressure, Frozen ) state.

Flow is commonly measured in ( GOM, GPM, GPH, PSI ) for sprinkler systems and in ( GOM, GPH, GPM, PSI ) for drip irrigation systems.