Kansas Irrigation Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. What is the purpose of a backflow prevention device?
A) Increase water pressure
B) Prevent contamination of potable water
C) Reduce irrigation scheduling
D) Direct water to the drain
Prevents potentially contaminated irrigation water from flowing
back into the potable water supply.
2. Hydrozoning in irrigation design refers to:
A) Grouping plants by color
B) Grouping plants by similar water needs
C) Mixing drip and spray in one zone
D) Designing zones by aesthetic only
Helps apply water efficiently by grouping plants with similar water
requirements.
3. What is the proper way to locate underground utilities before
excavation?
A) Guess based on prior jobs
B) Contact Kansas 811 (Call Before You Dig)
C) Only dig carefully
D) Use a shovel immediately
Kansas 811 locates utilities to reduce accidental utility strikes during
digging.
,4. Which device is specifically required to prevent backflow into a
potable water system?
A) Pressure Vacuum Breaker (PVB)
B) Gate valve
C) Ball valve
D) Check valve
Approved backflow preventers like PVBs are required by code to
protect potable water.
5. What does GPM stand for in irrigation design?
A) Gallons per minute
B) Gallons per meter
C) Gallons per minute
D) Gravity per measure
GPM measures the flow rate of water in irrigation systems.
6. What is “precipitation rate” in irrigation?
A) Rainfall only
B) Manufacturer’s warranty level
C) Water applied per unit area over time
D) Soil absorption rate
Defines how much water a system applies to an area in a given time.
7. Which of the following best describes an irrigation schedule?
A) When to mow the lawn
B) When and how long to run irrigation zones
C) When plants bloom
D) When to fertilize
A schedule defines irrigation timing and duration.
8. What is the primary purpose of zoning in an irrigation system?
A) To reduce pipe cost
B) To group similar water need areas
C) To increase controller size
D) To mark property lines
Zones allow efficient watering by separating areas with different
water needs.
9. Which pattern provides the most uniform sprinkler coverage?
A) Random
, B) Head-to-head spacing
C) Edge spacing
D) Minimal spacing
Head-to-head spacing ensures overlapping coverage for uniform
water distribution.
10. What is the first step in irrigation design?
A) Choose sprinklers
B) Perform a site analysis
C) Buy pipe
D) Install valves
Site analysis informs all subsequent design decisions based on site
conditions.
11. Why is soil type important in irrigation design?
A) Determines plant color
B) Affects water infiltration and retention
C) Determines sprinkler brand
D) Dictates pipe diameter
Soil controls how fast water moves into and through the ground.
12. What type of valve is typically used to isolate irrigation zones?
A) Butterfly valve
B) Pressure gauge
C) Zone control valve
D) Backflow valve
Zone control valves manage water flow to individual irrigation zones.
13. Pump sizing in an irrigation system should be based on:
A) Electrical cost
B) Required flow and pressure
C) Sprinkler color
D) Controller cost
Adequate pump capacity is crucial to meet hydraulic demands.
14. What does DU stand for in irrigation?
A) Distribution unit
B) Drainage utility
C) Distribution Uniformity
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. What is the purpose of a backflow prevention device?
A) Increase water pressure
B) Prevent contamination of potable water
C) Reduce irrigation scheduling
D) Direct water to the drain
Prevents potentially contaminated irrigation water from flowing
back into the potable water supply.
2. Hydrozoning in irrigation design refers to:
A) Grouping plants by color
B) Grouping plants by similar water needs
C) Mixing drip and spray in one zone
D) Designing zones by aesthetic only
Helps apply water efficiently by grouping plants with similar water
requirements.
3. What is the proper way to locate underground utilities before
excavation?
A) Guess based on prior jobs
B) Contact Kansas 811 (Call Before You Dig)
C) Only dig carefully
D) Use a shovel immediately
Kansas 811 locates utilities to reduce accidental utility strikes during
digging.
,4. Which device is specifically required to prevent backflow into a
potable water system?
A) Pressure Vacuum Breaker (PVB)
B) Gate valve
C) Ball valve
D) Check valve
Approved backflow preventers like PVBs are required by code to
protect potable water.
5. What does GPM stand for in irrigation design?
A) Gallons per minute
B) Gallons per meter
C) Gallons per minute
D) Gravity per measure
GPM measures the flow rate of water in irrigation systems.
6. What is “precipitation rate” in irrigation?
A) Rainfall only
B) Manufacturer’s warranty level
C) Water applied per unit area over time
D) Soil absorption rate
Defines how much water a system applies to an area in a given time.
7. Which of the following best describes an irrigation schedule?
A) When to mow the lawn
B) When and how long to run irrigation zones
C) When plants bloom
D) When to fertilize
A schedule defines irrigation timing and duration.
8. What is the primary purpose of zoning in an irrigation system?
A) To reduce pipe cost
B) To group similar water need areas
C) To increase controller size
D) To mark property lines
Zones allow efficient watering by separating areas with different
water needs.
9. Which pattern provides the most uniform sprinkler coverage?
A) Random
, B) Head-to-head spacing
C) Edge spacing
D) Minimal spacing
Head-to-head spacing ensures overlapping coverage for uniform
water distribution.
10. What is the first step in irrigation design?
A) Choose sprinklers
B) Perform a site analysis
C) Buy pipe
D) Install valves
Site analysis informs all subsequent design decisions based on site
conditions.
11. Why is soil type important in irrigation design?
A) Determines plant color
B) Affects water infiltration and retention
C) Determines sprinkler brand
D) Dictates pipe diameter
Soil controls how fast water moves into and through the ground.
12. What type of valve is typically used to isolate irrigation zones?
A) Butterfly valve
B) Pressure gauge
C) Zone control valve
D) Backflow valve
Zone control valves manage water flow to individual irrigation zones.
13. Pump sizing in an irrigation system should be based on:
A) Electrical cost
B) Required flow and pressure
C) Sprinkler color
D) Controller cost
Adequate pump capacity is crucial to meet hydraulic demands.
14. What does DU stand for in irrigation?
A) Distribution unit
B) Drainage utility
C) Distribution Uniformity
