TEXAS IRRIGATION STANDARD EXAM SHEET 2025/2026
QUESTIONS AND ANSWERS RATED A+
✔✔Type of damage occurring when water travels unrestricted though empty lateral
lines ? - ✔✔dry line shock
✔✔Device which allows water to flow out slowly in a drip irrigation system ? - ✔✔Emitter
✔✔When water flows through piping , pressure is lost as a result of ? - ✔✔friction
✔✔As a general guideline ,the design pressure should not exceed? -— of the static
pressure - ✔✔10%
✔✔Generally , sleeves should be at least _____larger than the irrigation piping
required. - ✔✔2 sizes
✔✔PVC pipe with the same physical dimension as iron pipe? - ✔✔Schedule pipe
✔✔The process of plant material giving off vapor from the leaves ? - ✔✔Transpiration
✔✔shock wave created by a fast closing valve ? - ✔✔Water hammer
✔✔act of chemically fusing PVC pipe and fittings together? - ✔✔solvent welding
✔✔PVC is an abbreviation for ? - ✔✔Polyvinyl Chloride
✔✔Flexible part of an automatic valve which regulates the passage of water? -
✔✔Diaphragm
✔✔What does I.P.S. stand for ? - ✔✔Iron plastic size
✔✔What does M.I.P. stand for ? - ✔✔male iron pipe
✔✔An irrigation system with any kind of injection device associated with it would be
termed as ____? - ✔✔Health Hazard
✔✔Which back flow device is required to be used with pumps ? - ✔✔Which ever one is
required by state or local codes .
✔✔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
✔✔Which back flow device is most recommended for systems with fertilizer injectors? -
✔✔Reduced pressure principle
✔✔Which back flow device is recommended for low hazard applications? -
✔✔atmospheric vacuum breaker
pressure vacuum breaker
double check assembly
reduced pressure principle
all of them.
✔✔Which back flow device can be installed below grade ? - ✔✔Double check assembly
✔✔Which back flow device can be under constant pressure? - ✔✔Pressure vacuum
breaker
Double check assembly
Reduced pressure principle
✔✔Which back flow device is acceptable to use when there is a possibility of back
pressure? - ✔✔Double check assembly
Reduced pressure principle
✔✔Which back flow device is recommended to prevent back siphonage ? - ✔✔AVB
PVB
DCA
RPZ
✔✔An atmospheric vacuum breaker is not suitable for__? - ✔✔Back pressure
✔✔statement correct>>> - ✔✔A pressure vacuum breaker, unlike the admospheric
vacuum breaker, will operate satisfactorily under constant pressure.
✔✔Back flow in the water distribution system can be caused by: - ✔✔Back pressure
and Back siphonage
✔✔A pressure vacuum breaker may be installed with a : - ✔✔Control valve immediately
downstream
✔✔Back prevention assemblies on high hazard systems should be repaired : -
✔✔When field test results show failure
QUESTIONS AND ANSWERS RATED A+
✔✔Type of damage occurring when water travels unrestricted though empty lateral
lines ? - ✔✔dry line shock
✔✔Device which allows water to flow out slowly in a drip irrigation system ? - ✔✔Emitter
✔✔When water flows through piping , pressure is lost as a result of ? - ✔✔friction
✔✔As a general guideline ,the design pressure should not exceed? -— of the static
pressure - ✔✔10%
✔✔Generally , sleeves should be at least _____larger than the irrigation piping
required. - ✔✔2 sizes
✔✔PVC pipe with the same physical dimension as iron pipe? - ✔✔Schedule pipe
✔✔The process of plant material giving off vapor from the leaves ? - ✔✔Transpiration
✔✔shock wave created by a fast closing valve ? - ✔✔Water hammer
✔✔act of chemically fusing PVC pipe and fittings together? - ✔✔solvent welding
✔✔PVC is an abbreviation for ? - ✔✔Polyvinyl Chloride
✔✔Flexible part of an automatic valve which regulates the passage of water? -
✔✔Diaphragm
✔✔What does I.P.S. stand for ? - ✔✔Iron plastic size
✔✔What does M.I.P. stand for ? - ✔✔male iron pipe
✔✔An irrigation system with any kind of injection device associated with it would be
termed as ____? - ✔✔Health Hazard
✔✔Which back flow device is required to be used with pumps ? - ✔✔Which ever one is
required by state or local codes .
✔✔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
✔✔Which back flow device is most recommended for systems with fertilizer injectors? -
✔✔Reduced pressure principle
✔✔Which back flow device is recommended for low hazard applications? -
✔✔atmospheric vacuum breaker
pressure vacuum breaker
double check assembly
reduced pressure principle
all of them.
✔✔Which back flow device can be installed below grade ? - ✔✔Double check assembly
✔✔Which back flow device can be under constant pressure? - ✔✔Pressure vacuum
breaker
Double check assembly
Reduced pressure principle
✔✔Which back flow device is acceptable to use when there is a possibility of back
pressure? - ✔✔Double check assembly
Reduced pressure principle
✔✔Which back flow device is recommended to prevent back siphonage ? - ✔✔AVB
PVB
DCA
RPZ
✔✔An atmospheric vacuum breaker is not suitable for__? - ✔✔Back pressure
✔✔statement correct>>> - ✔✔A pressure vacuum breaker, unlike the admospheric
vacuum breaker, will operate satisfactorily under constant pressure.
✔✔Back flow in the water distribution system can be caused by: - ✔✔Back pressure
and Back siphonage
✔✔A pressure vacuum breaker may be installed with a : - ✔✔Control valve immediately
downstream
✔✔Back prevention assemblies on high hazard systems should be repaired : -
✔✔When field test results show failure
