Texas Irrigator Exam with correct
Answers
A properly designed irrigation system can:
a. save water, time, and money
b. save installation time
c. cost more
d. last longer - Correct Answers -a. save water, time, and money
Basic irrigation dates back:
a. hundreds of years
b. since Rain Bird was founded
c. thousands of years
d. seventy-five years - Correct Answers -c. thousands of years
The impact sprinkler head was introduced by Rain Bird in:
a. 1933
b. 1985
c. 1890
d. 1910 - Correct Answers -a. 1933
Landscape irrigation, as we know it, has been around since:
a. the 1930's
b. since the development of PVC pipe
c. the beginning of time
d. the turn of the 20th century - Correct Answers -d. the turn of the 20th century
The rate at which soil will accept water is called the:
a. gravity
b. infiltration
c. percolation
d. capillary action - Correct Answers -d. capillary action
Which soil type has the fastest infiltration rate?
a. loam
b. sand
c. clay
d. sandy loam - Correct Answers -b. sand
,Head spacing is usually expressed 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. none of the above - Correct Answers -b. diameter of the spray of a given head
The issue of top priority in irrigation today is:
a. how to sell more systems in our present economy
b. new technology in back flow protection
c. water conservation
d. city and state regulations on licensing - Correct Answers -c. water conservation
The shortage of water is a result of:
a. water being a fixed resource
b. a decrease in the population
c. a decrease in water usage per person
d. larger sprinkler heads - Correct Answers -a. water being a fixed resource
Possible solutions to the scarcity of water include:
a. allowing only rock and desert landscapes
b. watering only once a week
c. promoting Xeriscaping
d. limiting irrigation systems to commercial properties only - Correct Answers -c.
promoting Xeriscaping
Which is not a possible solution for the scarcity of water?:
a. Xeriscaping
b. efficient landscape irrigation
c. construction of more dams
d. use of recycled water - Correct Answers -c. construction of more dams
One of the seven basic landscaping principles of Xeriscaping is:
a. larger turf areas
b. only rock landscapes
c. soil removal
d. mulching - Correct Answers -d. mulching
Efficient irrigation is geared more directly toward:
a. manufactures, irrigation contractors, homeowners, and proper education
b. federal government
c. city government
d. state government - Correct Answers -a. manufactures, irrigation contractors,
homeowners, and proper education
Manufactures can impact water conservation by producing:
,a. products at a lower cost
b. better low-volume irrigation products
c. sizing components properly
d. more efficient irrigation scheduling - Correct Answers -b. better low-volume irrigation
products
Which of the following is not a basic principle of Xeriscaping:
a. mulching
b. efficient irrigation
c. sizing components
d. proper maintenance - Correct Answers -c. sizing components
Pressure compensating devices help save water because they:
a. keep the water pressure high enough for good coverage
b. compensate for the lack of a good decision
c. help eliminate misting or fogging at the sprinkler heads
d. allow for fewer heads, thus less water used - Correct Answers -c. help eliminate
misting or fogging at the sprinkler heads
For irrigation contractors, water conservation starts with:
a. the proper back flow device
b. a great design
c. a good maintenance contract
d. the city irrigation regulations - Correct Answers -b. a great design
The proper watering time is early morning because:
a. homeowners will not get water when leaving the house
b. the city inspectors will not see your system run longer than allowed
c. sprinkler patters are generally less distorted from the wind
d. most homeowners don't want to see the water running - Correct Answers -c. sprinkler
patterns are generally less distorted from the wind
The art and management of applying water to the landscape to encourage the growth of
plant material and support water conservation is:
a. landscape irrigation
b. an irrigation system
c. an irrigation design
d. good for business and the environment - Correct Answers -a. landscape irrigation
the rate (or speed) at which soil will accept water. The speed at which water can
penetrate or infiltrate the soil. Also called percolation or infiltration rate. As the soil
"capacity" is reached, the absorption rate will decrease. It is affected by soil type, slope,
run-off, etc. Different soil types absorb water at a different rate. - Correct Answers -
absorption rate
, the depth of soil in which a plant extracts most of the water it needs for
evapotranspiration - Correct Answers -active root zone
The operating pressure measured at the base of a sprinkler head. Actual head pressure
is calculated by deducting total pressure losses from the static water pressure. ---- has
to be equal to, or greater than, the minimum head pressure, for a given sprinkler head
to function correctly - Correct Answers -Actual head pressure
An approved ---- is the unobstructed vertical distance through free atmosphere between
the lowest pint of water supply outlet and the flood level rim of the fixture or assembly
into which the outlet discharges. There vertical, physical separations must be at least
twice the diameter of the water supply outlet, but never less than 1 in. - Correct Answers
-Air Gap
Small device used on some subsurface drop irrigation that allows air into the dripperline
when the system is not running which eliminates any vacuum that could result in debris
or contaminants being sucked into the piping system - Correct Answers -Air/Vacuum
Relief Valve
The amount of water, in irrigation management, that is allowed to be depleted from the
plant available water before an irrigation event is scheduled. Also referred to as
Managed Allowable Depletion (MAD). Generally, 50% depletion is the rule of thumb -
Correct Answers -Allowable Depletion (AD)
An electric current that reverses it direction periodically - Correct Answers -Alternating
Current (AC)
Any device that introduces air into the system to prevent "back siphonage." - Correct
Answers -Anti-Siphon Device
Rate at which water is applied by sprinkler heads in a certain pattern. Usually measured
in inches per hour, gallons per hour or gallons per day. Commonly called "precipitation
rate". - Correct Answers -Application rate
What are the three methods in which to evaluate application rates? - Correct Answers -
1. a densogram
2. Precipitation rate formula
96.3 x total GPM / total area
3. a water audit
An underground layer or porous rock, sand, etc. containing water, into which wells can
be sunk - Correct Answers -Aquifer
The surface area of the landscape to which a sprinkler head will provide water. Usually
described in degrees or part of a full circle head. The degrees of coverage of a sprinkler
from one side of a pattern to the other. - Correct Answers -Arc
Answers
A properly designed irrigation system can:
a. save water, time, and money
b. save installation time
c. cost more
d. last longer - Correct Answers -a. save water, time, and money
Basic irrigation dates back:
a. hundreds of years
b. since Rain Bird was founded
c. thousands of years
d. seventy-five years - Correct Answers -c. thousands of years
The impact sprinkler head was introduced by Rain Bird in:
a. 1933
b. 1985
c. 1890
d. 1910 - Correct Answers -a. 1933
Landscape irrigation, as we know it, has been around since:
a. the 1930's
b. since the development of PVC pipe
c. the beginning of time
d. the turn of the 20th century - Correct Answers -d. the turn of the 20th century
The rate at which soil will accept water is called the:
a. gravity
b. infiltration
c. percolation
d. capillary action - Correct Answers -d. capillary action
Which soil type has the fastest infiltration rate?
a. loam
b. sand
c. clay
d. sandy loam - Correct Answers -b. sand
,Head spacing is usually expressed 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. none of the above - Correct Answers -b. diameter of the spray of a given head
The issue of top priority in irrigation today is:
a. how to sell more systems in our present economy
b. new technology in back flow protection
c. water conservation
d. city and state regulations on licensing - Correct Answers -c. water conservation
The shortage of water is a result of:
a. water being a fixed resource
b. a decrease in the population
c. a decrease in water usage per person
d. larger sprinkler heads - Correct Answers -a. water being a fixed resource
Possible solutions to the scarcity of water include:
a. allowing only rock and desert landscapes
b. watering only once a week
c. promoting Xeriscaping
d. limiting irrigation systems to commercial properties only - Correct Answers -c.
promoting Xeriscaping
Which is not a possible solution for the scarcity of water?:
a. Xeriscaping
b. efficient landscape irrigation
c. construction of more dams
d. use of recycled water - Correct Answers -c. construction of more dams
One of the seven basic landscaping principles of Xeriscaping is:
a. larger turf areas
b. only rock landscapes
c. soil removal
d. mulching - Correct Answers -d. mulching
Efficient irrigation is geared more directly toward:
a. manufactures, irrigation contractors, homeowners, and proper education
b. federal government
c. city government
d. state government - Correct Answers -a. manufactures, irrigation contractors,
homeowners, and proper education
Manufactures can impact water conservation by producing:
,a. products at a lower cost
b. better low-volume irrigation products
c. sizing components properly
d. more efficient irrigation scheduling - Correct Answers -b. better low-volume irrigation
products
Which of the following is not a basic principle of Xeriscaping:
a. mulching
b. efficient irrigation
c. sizing components
d. proper maintenance - Correct Answers -c. sizing components
Pressure compensating devices help save water because they:
a. keep the water pressure high enough for good coverage
b. compensate for the lack of a good decision
c. help eliminate misting or fogging at the sprinkler heads
d. allow for fewer heads, thus less water used - Correct Answers -c. help eliminate
misting or fogging at the sprinkler heads
For irrigation contractors, water conservation starts with:
a. the proper back flow device
b. a great design
c. a good maintenance contract
d. the city irrigation regulations - Correct Answers -b. a great design
The proper watering time is early morning because:
a. homeowners will not get water when leaving the house
b. the city inspectors will not see your system run longer than allowed
c. sprinkler patters are generally less distorted from the wind
d. most homeowners don't want to see the water running - Correct Answers -c. sprinkler
patterns are generally less distorted from the wind
The art and management of applying water to the landscape to encourage the growth of
plant material and support water conservation is:
a. landscape irrigation
b. an irrigation system
c. an irrigation design
d. good for business and the environment - Correct Answers -a. landscape irrigation
the rate (or speed) at which soil will accept water. The speed at which water can
penetrate or infiltrate the soil. Also called percolation or infiltration rate. As the soil
"capacity" is reached, the absorption rate will decrease. It is affected by soil type, slope,
run-off, etc. Different soil types absorb water at a different rate. - Correct Answers -
absorption rate
, the depth of soil in which a plant extracts most of the water it needs for
evapotranspiration - Correct Answers -active root zone
The operating pressure measured at the base of a sprinkler head. Actual head pressure
is calculated by deducting total pressure losses from the static water pressure. ---- has
to be equal to, or greater than, the minimum head pressure, for a given sprinkler head
to function correctly - Correct Answers -Actual head pressure
An approved ---- is the unobstructed vertical distance through free atmosphere between
the lowest pint of water supply outlet and the flood level rim of the fixture or assembly
into which the outlet discharges. There vertical, physical separations must be at least
twice the diameter of the water supply outlet, but never less than 1 in. - Correct Answers
-Air Gap
Small device used on some subsurface drop irrigation that allows air into the dripperline
when the system is not running which eliminates any vacuum that could result in debris
or contaminants being sucked into the piping system - Correct Answers -Air/Vacuum
Relief Valve
The amount of water, in irrigation management, that is allowed to be depleted from the
plant available water before an irrigation event is scheduled. Also referred to as
Managed Allowable Depletion (MAD). Generally, 50% depletion is the rule of thumb -
Correct Answers -Allowable Depletion (AD)
An electric current that reverses it direction periodically - Correct Answers -Alternating
Current (AC)
Any device that introduces air into the system to prevent "back siphonage." - Correct
Answers -Anti-Siphon Device
Rate at which water is applied by sprinkler heads in a certain pattern. Usually measured
in inches per hour, gallons per hour or gallons per day. Commonly called "precipitation
rate". - Correct Answers -Application rate
What are the three methods in which to evaluate application rates? - Correct Answers -
1. a densogram
2. Precipitation rate formula
96.3 x total GPM / total area
3. a water audit
An underground layer or porous rock, sand, etc. containing water, into which wells can
be sunk - Correct Answers -Aquifer
The surface area of the landscape to which a sprinkler head will provide water. Usually
described in degrees or part of a full circle head. The degrees of coverage of a sprinkler
from one side of a pattern to the other. - Correct Answers -Arc
