EXAM PRACTICE TEST FOR TEXAS
IRRIGATOR LICENSE UPDATED ACTUAL
QUESTIONS WITH CORRECT ANSWERS
Question 1.
Written contracts and bills to install irrigation systems must include the statement:
ANSWER
''Irrigation in Texas is regulated by the Texas Commision on Environmental Quality,P.O Box
13087,Austin, Texas 78711-3087.''
Question 2.
A device used to turn a quick coupler valve on and off is:
ANSWER
A quick coupler key
Question 3.
To convert psi to feet
ANSWER
Multiply by 2.31
,Question 4.
What is the piping between the backflow device and the zone valve called?
ANSWER
Main line
Question 5.
A method of maintaining a constant discharge pressure regardless of inlet pressure is called:
ANSWER
Pressure compensating
Question 6.
A cross connection is any actual or potential connection between a potable water supply and:
ANSWER
Any source that has the possibility to introduce polluted or contaminated water back into the
potable water that is supplying it
Question 7.
What is the pressure loss in the mainline when zone #2 is operating?
ANSWER
1.17 PSI
55'' x 2.12(fromthe class 200 chart)=1.17
,Question 8.
Drip[ irrigation is installed in an area that is 35'x65'. The drip irrigation is drip emitters(emitters that
are factory installed at different intervals in the piping).These emitters are installed every 18'' and row
spacing is suggested at 18'' as well.The flow rate per emitter is .6 GPH(Gallon per Hour). The
manufacturer suggest installing the piping 4'' from the hardscape (4''infrom the borders on all sides
of your area)
How many GPM(Gallons per Minute)are you flowing in this area?
ANSWER
10.3
Question 9.
What would the head spacing be if the landscape distance was 169 feet, using a 35' rotary head?
ANSWER
33.8 feet
169' divided 35' = 4.83,round up to the next highest whole number of 5
169' divided 5'= 33.8'
Question 10.
When using drip irrigation,the water volume of individual drip emitters is generally expressed in:
ANSWER
GPH
Question 11.
What more can a licensed irrigator do than a licensed technician?
ANSWER
Sell,design,and consult
, Question 12.
Which backflow device has to be tested upon installation?
ANSWER
All Backflow devices
Question 13.
Calculate th GPM flowing in the lateral piping section G when zone #1 is operating?
ANSWER
24 GPM
Question 14.
Drip[ irrigation is installed in an area that is 35'x65'. The drip irrigation is drip emitters(emitters that
are factory installed at different intervals in the piping).These emitters are installed every 18'' and row
spacing is suggested at 18'' as well.The flow rate per emitter is .6 GPH(Gallon per Hour). The
manufacturer suggest installing the piping 4'' from the hardscape (4''infrom the borders on all sides
of your area)
Approximately,how many emitters will you have installed in this area?
ANSWER
1029
IRRIGATOR LICENSE UPDATED ACTUAL
QUESTIONS WITH CORRECT ANSWERS
Question 1.
Written contracts and bills to install irrigation systems must include the statement:
ANSWER
''Irrigation in Texas is regulated by the Texas Commision on Environmental Quality,P.O Box
13087,Austin, Texas 78711-3087.''
Question 2.
A device used to turn a quick coupler valve on and off is:
ANSWER
A quick coupler key
Question 3.
To convert psi to feet
ANSWER
Multiply by 2.31
,Question 4.
What is the piping between the backflow device and the zone valve called?
ANSWER
Main line
Question 5.
A method of maintaining a constant discharge pressure regardless of inlet pressure is called:
ANSWER
Pressure compensating
Question 6.
A cross connection is any actual or potential connection between a potable water supply and:
ANSWER
Any source that has the possibility to introduce polluted or contaminated water back into the
potable water that is supplying it
Question 7.
What is the pressure loss in the mainline when zone #2 is operating?
ANSWER
1.17 PSI
55'' x 2.12(fromthe class 200 chart)=1.17
,Question 8.
Drip[ irrigation is installed in an area that is 35'x65'. The drip irrigation is drip emitters(emitters that
are factory installed at different intervals in the piping).These emitters are installed every 18'' and row
spacing is suggested at 18'' as well.The flow rate per emitter is .6 GPH(Gallon per Hour). The
manufacturer suggest installing the piping 4'' from the hardscape (4''infrom the borders on all sides
of your area)
How many GPM(Gallons per Minute)are you flowing in this area?
ANSWER
10.3
Question 9.
What would the head spacing be if the landscape distance was 169 feet, using a 35' rotary head?
ANSWER
33.8 feet
169' divided 35' = 4.83,round up to the next highest whole number of 5
169' divided 5'= 33.8'
Question 10.
When using drip irrigation,the water volume of individual drip emitters is generally expressed in:
ANSWER
GPH
Question 11.
What more can a licensed irrigator do than a licensed technician?
ANSWER
Sell,design,and consult
, Question 12.
Which backflow device has to be tested upon installation?
ANSWER
All Backflow devices
Question 13.
Calculate th GPM flowing in the lateral piping section G when zone #1 is operating?
ANSWER
24 GPM
Question 14.
Drip[ irrigation is installed in an area that is 35'x65'. The drip irrigation is drip emitters(emitters that
are factory installed at different intervals in the piping).These emitters are installed every 18'' and row
spacing is suggested at 18'' as well.The flow rate per emitter is .6 GPH(Gallon per Hour). The
manufacturer suggest installing the piping 4'' from the hardscape (4''infrom the borders on all sides
of your area)
Approximately,how many emitters will you have installed in this area?
ANSWER
1029
