Page 1 of 110
IRRIGATION TECHNOLOGY / LANDSCAPE MANAGEMENT ACTUAL
EXAM WITH 200 QUESTIONS- CORRECT VERIFIED AND DETAILED
ANSWERS |ALREADY GRADED A+ || LATEST UPDATE -JUST RELEASED
Landscape Irrigation Technology / Water Management
Exam coverage: -
Irrigation Technician exam domains: hydraulics (pressure, flow, friction
loss), pumps (centrifugal, submersible, curves, cavitation), backflow
prevention (RPZ, PVB, testing, cross‑connection), sprinklers (rotors,
sprays, spacing, precipitation rate), valves (solenoids, diaphragm,
troubleshooting), controllers (programming, smart, sensors, wiring,
resistance), drip irrigation, water conservation (ET, cycle/soak),
soil‑plant‑water (infiltration, clay loam sand), safety (LOTO, trenching,
gloves), and business practices.
Section 1: Hydraulics & Pipes (Questions 1–25)
Question 1
The pressure required to raise a column of water 1 foot (0.3 m) is 0.433
pounds per square inch (psi). This is known as hydrostatic pressure. If an
irrigation system has a static pressure of 60 psi, what is the total water
pressure at a gauge located 20 feet lower than the gauge that gave the 60
psi reading?
A) 40 psi
B) 51.34 psi
C) 68.66 psi
D) 80 psi
Correct Answer: C
, Page 2 of 110
Rationale: Water pressure increases by 0.433 psi for every foot of
elevation drop. Adding 0.433 psi × 20 ft = 8.66 psi to the original 60 psi
gives 68.66 psi. Friction losses in the pipe could lower the actual working
pressure; however, that is not what this question is asking. This is a
simple calculation of pressure gain due to the increased water column
height on the lower gauge.
Question 2
A technician is installing a new underground mainline for a sprinkler
system. The mainline is 300 feet long and will be constructed of PVC
pipe. The PVC manufacturer recommends a maximum flow velocity of 5
feet per second for Schedule 40 PVC. What is the primary reason for this
velocity limitation?
A) To avoid pipe freeze during winter months
B) To prevent water hammer damage and reduce friction loss
C) To make pipe priming easier
D) To reduce algae growth inside the pipe
Correct Answer: B
Rationale: Limiting water velocity to 5 ft/s in PVC pipes helps prevent
water hammer (pressure surges) that can damage pipes and fittings. It
also limits friction loss, ensuring that the system maintains adequate
pressure at the sprinkler heads.
Question 3
, Page 3 of 110
A technician is measuring the pressure at a sprinkler head. A gauge
connected directly to the sprinkler riser when no water is flowing reads
45 psi. When the system is running and the sprinkler is operating, the
gauge reads 38 psi. What are the correct terms for these two pressure
readings?
A) Static pressure (45 psi) and dynamic pressure (38 psi)
B) Dynamic pressure (45 psi) and static pressure (38 psi)
C) Working pressure (45 psi) and residual pressure (38 psi)
D) Maximum pressure (45 psi) and minimum pressure (38 psi)
Correct Answer: A
Rationale: Static pressure is the water pressure when there is no flow.
Dynamic (or residual) pressure is the pressure measured while water is
flowing. The drop from 45 to 38 psi indicates friction losses in the pipe
and components.
Question 4
A technician is reading a friction loss chart to select a pipe size. The
chart shows that for 15 gallons per minute (GPM) of flow, 200 feet of 1-
inch PVC pipe has a friction loss of 15 psi, while the same flow through
1.25‑inch pipe in 200 feet has a friction loss of 6 psi. If the water source
has an available dynamic pressure of 50 psi at the valve, what is the
approximate pressure at the end of the 200-foot run of 1-inch pipe?
A) 44 psi
B) 35 psi
C) 50 psi
D) 60 psi
, Page 4 of 110
Correct Answer: B
Rationale: The pressure at the end of the pipe is the starting pressure (50
psi) minus the friction loss (15 psi) = 35 psi. The higher friction loss in the
1‑inch pipe results in significantly lower pressure at the sprinklers
compared to the 1.25‑inch pipe.
Question 5
A technician is working on a large property where the pressure gauge at
the water source reads 70 psi when water is not moving. At the same
time, a gauge on a riser at the far end of the mainline reads 0 psi. What is
the most probable cause of this issue?
A) The mainline is not deep enough
B) A closed or partially closed isolation valve is preventing water flow
C) The sprinkler heads are of the wrong type
D) The controller is not programmed correctly
Correct Answer: B
Rationale: A closed valve or a blockage in the mainline will allow static
pressure to build up (indicated by the source gauge) but prevent flow, so
the downstream gauge will read zero. The technician should check all
isolation valves in the system.
Question 6
IRRIGATION TECHNOLOGY / LANDSCAPE MANAGEMENT ACTUAL
EXAM WITH 200 QUESTIONS- CORRECT VERIFIED AND DETAILED
ANSWERS |ALREADY GRADED A+ || LATEST UPDATE -JUST RELEASED
Landscape Irrigation Technology / Water Management
Exam coverage: -
Irrigation Technician exam domains: hydraulics (pressure, flow, friction
loss), pumps (centrifugal, submersible, curves, cavitation), backflow
prevention (RPZ, PVB, testing, cross‑connection), sprinklers (rotors,
sprays, spacing, precipitation rate), valves (solenoids, diaphragm,
troubleshooting), controllers (programming, smart, sensors, wiring,
resistance), drip irrigation, water conservation (ET, cycle/soak),
soil‑plant‑water (infiltration, clay loam sand), safety (LOTO, trenching,
gloves), and business practices.
Section 1: Hydraulics & Pipes (Questions 1–25)
Question 1
The pressure required to raise a column of water 1 foot (0.3 m) is 0.433
pounds per square inch (psi). This is known as hydrostatic pressure. If an
irrigation system has a static pressure of 60 psi, what is the total water
pressure at a gauge located 20 feet lower than the gauge that gave the 60
psi reading?
A) 40 psi
B) 51.34 psi
C) 68.66 psi
D) 80 psi
Correct Answer: C
, Page 2 of 110
Rationale: Water pressure increases by 0.433 psi for every foot of
elevation drop. Adding 0.433 psi × 20 ft = 8.66 psi to the original 60 psi
gives 68.66 psi. Friction losses in the pipe could lower the actual working
pressure; however, that is not what this question is asking. This is a
simple calculation of pressure gain due to the increased water column
height on the lower gauge.
Question 2
A technician is installing a new underground mainline for a sprinkler
system. The mainline is 300 feet long and will be constructed of PVC
pipe. The PVC manufacturer recommends a maximum flow velocity of 5
feet per second for Schedule 40 PVC. What is the primary reason for this
velocity limitation?
A) To avoid pipe freeze during winter months
B) To prevent water hammer damage and reduce friction loss
C) To make pipe priming easier
D) To reduce algae growth inside the pipe
Correct Answer: B
Rationale: Limiting water velocity to 5 ft/s in PVC pipes helps prevent
water hammer (pressure surges) that can damage pipes and fittings. It
also limits friction loss, ensuring that the system maintains adequate
pressure at the sprinkler heads.
Question 3
, Page 3 of 110
A technician is measuring the pressure at a sprinkler head. A gauge
connected directly to the sprinkler riser when no water is flowing reads
45 psi. When the system is running and the sprinkler is operating, the
gauge reads 38 psi. What are the correct terms for these two pressure
readings?
A) Static pressure (45 psi) and dynamic pressure (38 psi)
B) Dynamic pressure (45 psi) and static pressure (38 psi)
C) Working pressure (45 psi) and residual pressure (38 psi)
D) Maximum pressure (45 psi) and minimum pressure (38 psi)
Correct Answer: A
Rationale: Static pressure is the water pressure when there is no flow.
Dynamic (or residual) pressure is the pressure measured while water is
flowing. The drop from 45 to 38 psi indicates friction losses in the pipe
and components.
Question 4
A technician is reading a friction loss chart to select a pipe size. The
chart shows that for 15 gallons per minute (GPM) of flow, 200 feet of 1-
inch PVC pipe has a friction loss of 15 psi, while the same flow through
1.25‑inch pipe in 200 feet has a friction loss of 6 psi. If the water source
has an available dynamic pressure of 50 psi at the valve, what is the
approximate pressure at the end of the 200-foot run of 1-inch pipe?
A) 44 psi
B) 35 psi
C) 50 psi
D) 60 psi
, Page 4 of 110
Correct Answer: B
Rationale: The pressure at the end of the pipe is the starting pressure (50
psi) minus the friction loss (15 psi) = 35 psi. The higher friction loss in the
1‑inch pipe results in significantly lower pressure at the sprinklers
compared to the 1.25‑inch pipe.
Question 5
A technician is working on a large property where the pressure gauge at
the water source reads 70 psi when water is not moving. At the same
time, a gauge on a riser at the far end of the mainline reads 0 psi. What is
the most probable cause of this issue?
A) The mainline is not deep enough
B) A closed or partially closed isolation valve is preventing water flow
C) The sprinkler heads are of the wrong type
D) The controller is not programmed correctly
Correct Answer: B
Rationale: A closed valve or a blockage in the mainline will allow static
pressure to build up (indicated by the source gauge) but prevent flow, so
the downstream gauge will read zero. The technician should check all
isolation valves in the system.
Question 6
