TEXAS IRRIGATION EVALUATION EXAM 2025/2026
QUESTIONS AND ANSWERS RATED A+
✔✔AWWA - ✔✔American Water Works Association
✔✔A _______ is valve that permits water to flow in one direction only - ✔✔CHECK
valve
✔✔A ______ is one complete operation of a controller through all programed stations -
✔✔CIRCUIT
✔✔______ pressure is the minimus pressure required for a system to operate properly -
✔✔DESIGN
✔✔__________ is a type of damage occurring when water travels unrestricted through
empty lateral lines - ✔✔DRY LINE SHOCKED AND APPALLED
✔✔An ________ is a device which allows water to flow out slowly in a drip irrigation
system - ✔✔EMITTER
✔✔Emitters use _____ to measure precipitation rate - ✔✔GAL PRE HOUR (GPH)
✔✔Spray heads use ___ to measure precipitation rate - ✔✔GAL PER MIN (GPM)
✔✔Pressure is lost as water moves through the piping is a result of _________ -
✔✔FRICTION
✔✔The design pressure should not exceed ________ of the static pressure - ✔✔90%
✔✔Sleeves should be at least ______ larger than the irrigation piping required - ✔✔two
sizes
✔✔PVC pipe with the same physical dimensions as iron pipe. - ✔✔SCHEDULE PIPE
✔✔________ is the process of plant material giving off water vapor from their leaves -
✔✔TRANSPIRATION
✔✔A shock wave of water created by a fast closing valve is called _______ - ✔✔Water
Hammer
✔✔How do you denote the "Designation Code" for PVC pipe - ✔✔Type# + Grade# +
psi/100
, ([ex]
PVC pipe Type One, Grade Two, 2000 psi DP
=
1220)
✔✔The act of chemically fusing PVC pipe and fittings together is called - ✔✔Solvent
Welding
✔✔PVC stands for - ✔✔polyvinyl chloride
✔✔The _________ is the flexible part of an automatic valve which regulates the
passage of water - ✔✔DIAPHRAGM
✔✔I.P.S. stands for - ✔✔Iron Pipe Size
✔✔MIP stands for - ✔✔Male Iron Pipe
✔✔An irrigation system with any kind of injection device associated with it would be
referred as _____ - ✔✔Heath Hazard
✔✔A __________ back flow device is required to be used with pumps - ✔✔(Which ever
the state or local codes team required)
✔✔The mechanical prevention of reverse flow, or back siphonage, of non-potable water
from an irrigation system into the public water system is called_______ - ✔✔Back Flow
Prevention
✔✔Any pressure, regardless of its source, against the outlet side of the back flow
prevention device, which exceeds the supply pressure against the inlet side of the
device is _________ - ✔✔Back Pressure
✔✔_____________ is most recommended for system with fertilizer injectors -
✔✔Reduced Pressure Principle
✔✔For low hazard applications, ________ is recommended - ✔✔ANY BACK FLOW
DEVICE
✔✔The ________________. can be installed below grade ( ground level ) - ✔✔Double
Check Valve Assembly
✔✔_________, ___________, and ___________ can be under constant pressure -
✔✔Pressure Vacuum Breaker,
Double Check Valve Assembly,
QUESTIONS AND ANSWERS RATED A+
✔✔AWWA - ✔✔American Water Works Association
✔✔A _______ is valve that permits water to flow in one direction only - ✔✔CHECK
valve
✔✔A ______ is one complete operation of a controller through all programed stations -
✔✔CIRCUIT
✔✔______ pressure is the minimus pressure required for a system to operate properly -
✔✔DESIGN
✔✔__________ is a type of damage occurring when water travels unrestricted through
empty lateral lines - ✔✔DRY LINE SHOCKED AND APPALLED
✔✔An ________ is a device which allows water to flow out slowly in a drip irrigation
system - ✔✔EMITTER
✔✔Emitters use _____ to measure precipitation rate - ✔✔GAL PRE HOUR (GPH)
✔✔Spray heads use ___ to measure precipitation rate - ✔✔GAL PER MIN (GPM)
✔✔Pressure is lost as water moves through the piping is a result of _________ -
✔✔FRICTION
✔✔The design pressure should not exceed ________ of the static pressure - ✔✔90%
✔✔Sleeves should be at least ______ larger than the irrigation piping required - ✔✔two
sizes
✔✔PVC pipe with the same physical dimensions as iron pipe. - ✔✔SCHEDULE PIPE
✔✔________ is the process of plant material giving off water vapor from their leaves -
✔✔TRANSPIRATION
✔✔A shock wave of water created by a fast closing valve is called _______ - ✔✔Water
Hammer
✔✔How do you denote the "Designation Code" for PVC pipe - ✔✔Type# + Grade# +
psi/100
, ([ex]
PVC pipe Type One, Grade Two, 2000 psi DP
=
1220)
✔✔The act of chemically fusing PVC pipe and fittings together is called - ✔✔Solvent
Welding
✔✔PVC stands for - ✔✔polyvinyl chloride
✔✔The _________ is the flexible part of an automatic valve which regulates the
passage of water - ✔✔DIAPHRAGM
✔✔I.P.S. stands for - ✔✔Iron Pipe Size
✔✔MIP stands for - ✔✔Male Iron Pipe
✔✔An irrigation system with any kind of injection device associated with it would be
referred as _____ - ✔✔Heath Hazard
✔✔A __________ back flow device is required to be used with pumps - ✔✔(Which ever
the state or local codes team required)
✔✔The mechanical prevention of reverse flow, or back siphonage, of non-potable water
from an irrigation system into the public water system is called_______ - ✔✔Back Flow
Prevention
✔✔Any pressure, regardless of its source, against the outlet side of the back flow
prevention device, which exceeds the supply pressure against the inlet side of the
device is _________ - ✔✔Back Pressure
✔✔_____________ is most recommended for system with fertilizer injectors -
✔✔Reduced Pressure Principle
✔✔For low hazard applications, ________ is recommended - ✔✔ANY BACK FLOW
DEVICE
✔✔The ________________. can be installed below grade ( ground level ) - ✔✔Double
Check Valve Assembly
✔✔_________, ___________, and ___________ can be under constant pressure -
✔✔Pressure Vacuum Breaker,
Double Check Valve Assembly,
