Texas Irrigator Practice Test Section 3
Questions and Answers (Verified Answers)
An engineer scale is:
a). A measuring device that has measurements as a given number of feet per inch.
b). A measuring device that has measurements as a given number of inches per foot.
c). A measuring device in which a fraction of an inch equals 1 foot.
d). None of the above.
a). A measuring device that has measurements as a given number of feet per inch.
In calculating the available water capacity, pressure loss through the water meter should not exceed
what percentage of the minimum static water pressure available?
a). 5
b). 15
c). 25
d). 10
d). 10
The maximum water flow through the water meter should not exceed:
a). 75% of the safe flow of the meter.
b). 50% of the safe flow of the meter.
c). 25% of the safe flow of the meter.
d). 10% of the safe flow of the meter.
a). 75% of the safe flow of the meter
What is the maximum acceptable velocity of the water flow through the copper service line?
a). 10 fps
b). 9 psi
c). 9 fps
d). 5 fps
c). 9 fps
Water loss in plant material is a result of:
a). Solar heat
b). Evapotranspiration
c). Run-off
d). Excessive drought periods
b). Evapotranspiration
Evapotranspiration is a combination of:
a). Humidity and solar heat
b). Evaporation and transpiration
c). Solar radiation and wind
d). Soil type and evaporation
b). Evaporation and transpiration
What is capillary action? a). The main effect distributing water vertically through the soil.
b). The main effect distributing water through the piping.
c). The main effect distributing chemicals in the soil.
d). The main effect distributing water horizontally through the soil.
d). The main effect distributing water horizontally through the soil.
, Which soil type has the slowest infiltration rate?
a). Loam
b). Sand
c). Clay
d). Sandy loam
c). Clay
Head spacing is calculated as a percentage of what?
a). The area the head covers
b). Diameter of the spray of a given head
c). Radius of the spray of a given head
d). Half of the radius of a given head
b). Diameter of the spray of a given head
Head to head spacing on all sprinkler heads is considered?
a). 70% spacing
b). 40% spacing
c). 10% spacing
d). 50% spacing
d). 50% spacing
What would 60% spacing be on a 12' spray head?
a). 14.40 feet
b). 7.2 feet
c). 10 feet
d). 12 feet
a). 14.40 feet
(Use the diameter of the head which is 24' (12'x2)
(24' diameter x .60 = 14.40))
What are the most common spacing patterns?
a). Rectangular spacing
b). Square spacing
c). Triangular spacing
d). B & C
d). B & C
What is the row spacing, using triangular spacing, when the head spacing is 15 feet?
a). 18 feet
b). 13 feet
c). 15 feet
d). 14 feet
b). 13 feet
(15' x .866 = 12.99', rounded to 13')
If you want the average precipitation rate for an area, which method would work?
a). Single head method
b). Triangular spacing method
c). Specific area method
Questions and Answers (Verified Answers)
An engineer scale is:
a). A measuring device that has measurements as a given number of feet per inch.
b). A measuring device that has measurements as a given number of inches per foot.
c). A measuring device in which a fraction of an inch equals 1 foot.
d). None of the above.
a). A measuring device that has measurements as a given number of feet per inch.
In calculating the available water capacity, pressure loss through the water meter should not exceed
what percentage of the minimum static water pressure available?
a). 5
b). 15
c). 25
d). 10
d). 10
The maximum water flow through the water meter should not exceed:
a). 75% of the safe flow of the meter.
b). 50% of the safe flow of the meter.
c). 25% of the safe flow of the meter.
d). 10% of the safe flow of the meter.
a). 75% of the safe flow of the meter
What is the maximum acceptable velocity of the water flow through the copper service line?
a). 10 fps
b). 9 psi
c). 9 fps
d). 5 fps
c). 9 fps
Water loss in plant material is a result of:
a). Solar heat
b). Evapotranspiration
c). Run-off
d). Excessive drought periods
b). Evapotranspiration
Evapotranspiration is a combination of:
a). Humidity and solar heat
b). Evaporation and transpiration
c). Solar radiation and wind
d). Soil type and evaporation
b). Evaporation and transpiration
What is capillary action? a). The main effect distributing water vertically through the soil.
b). The main effect distributing water through the piping.
c). The main effect distributing chemicals in the soil.
d). The main effect distributing water horizontally through the soil.
d). The main effect distributing water horizontally through the soil.
, Which soil type has the slowest infiltration rate?
a). Loam
b). Sand
c). Clay
d). Sandy loam
c). Clay
Head spacing is calculated as a percentage of what?
a). The area the head covers
b). Diameter of the spray of a given head
c). Radius of the spray of a given head
d). Half of the radius of a given head
b). Diameter of the spray of a given head
Head to head spacing on all sprinkler heads is considered?
a). 70% spacing
b). 40% spacing
c). 10% spacing
d). 50% spacing
d). 50% spacing
What would 60% spacing be on a 12' spray head?
a). 14.40 feet
b). 7.2 feet
c). 10 feet
d). 12 feet
a). 14.40 feet
(Use the diameter of the head which is 24' (12'x2)
(24' diameter x .60 = 14.40))
What are the most common spacing patterns?
a). Rectangular spacing
b). Square spacing
c). Triangular spacing
d). B & C
d). B & C
What is the row spacing, using triangular spacing, when the head spacing is 15 feet?
a). 18 feet
b). 13 feet
c). 15 feet
d). 14 feet
b). 13 feet
(15' x .866 = 12.99', rounded to 13')
If you want the average precipitation rate for an area, which method would work?
a). Single head method
b). Triangular spacing method
c). Specific area method
