1|Page
North Carolina Irrigation Contractor Exam|| Verified
Questions and Correct Answers with EXPLANATIONS
LATEST UPDATE.pdf
A CR-21 licensee may install residential misting systems
under what PSI?
A. 1000 psi
B. 120 psi
C. 90 psi
D. 500 psi - Answer-A. 1000 psi
HARDSCAPING AND IRRIGATION SYSTEMS This
classification allows the licensee to install, alter, and
repair:
Residential outdoor misting systems. Free standing or
attached to existing appurtenance, not more than 1000
PSI.
,2|Page
Blue Stake uses orange to mark which of the following?
A. Gas
B. Electric
C. Fiber Optics, Cable, Phone
D. Sewer - Answer-C. Fiber Optics, Cable, Phone
Electric Power Distribution - Safety Red Gas, Oil
Distribution - High Visibility Safety Yellow Telephone,
Cable, Fiber Optics - Safety Alert Orange Water Systems -
Safety Precaution Blue Sanitary Sewer Systems - Safety
Green Reclaimed Water - Purple
What color is used to mark an area for locating utilities
prior to excavations?
A. Green
,3|Page
B. White
C. Blue
D. Pink - Answer-B. White
All of the following will not decrease the water pressure in
a long run of irrigation pipe except?
A. A pipe going down hill
B. Going from a larger pipe to a smaller pipe
C. Less Sprinklers on a run
D. Going from a smaller piper to a larger pipe - Answer-D.
Going from a smaller piper to a larger pipe
How is total surge pressure calculate?
, 4|Page
A. Surge pressure caused by an opening valve plus
working pressure in the pipe line
B. Water hammer plus static pressure in the pipe line
C. Surge pressure caused by a closing valve plus working
pressure in the pipeline
D. Working water pressure in the pipeline plus static
pressure - Answer-C. Surge pressure caused by a closing
valve plus working pressure in the pipeline
Pressure caused by closing a valve on pressured water
When is a good time to transplant?
A. Summer
B. NEED HELP
C. Late Spring
North Carolina Irrigation Contractor Exam|| Verified
Questions and Correct Answers with EXPLANATIONS
LATEST UPDATE.pdf
A CR-21 licensee may install residential misting systems
under what PSI?
A. 1000 psi
B. 120 psi
C. 90 psi
D. 500 psi - Answer-A. 1000 psi
HARDSCAPING AND IRRIGATION SYSTEMS This
classification allows the licensee to install, alter, and
repair:
Residential outdoor misting systems. Free standing or
attached to existing appurtenance, not more than 1000
PSI.
,2|Page
Blue Stake uses orange to mark which of the following?
A. Gas
B. Electric
C. Fiber Optics, Cable, Phone
D. Sewer - Answer-C. Fiber Optics, Cable, Phone
Electric Power Distribution - Safety Red Gas, Oil
Distribution - High Visibility Safety Yellow Telephone,
Cable, Fiber Optics - Safety Alert Orange Water Systems -
Safety Precaution Blue Sanitary Sewer Systems - Safety
Green Reclaimed Water - Purple
What color is used to mark an area for locating utilities
prior to excavations?
A. Green
,3|Page
B. White
C. Blue
D. Pink - Answer-B. White
All of the following will not decrease the water pressure in
a long run of irrigation pipe except?
A. A pipe going down hill
B. Going from a larger pipe to a smaller pipe
C. Less Sprinklers on a run
D. Going from a smaller piper to a larger pipe - Answer-D.
Going from a smaller piper to a larger pipe
How is total surge pressure calculate?
, 4|Page
A. Surge pressure caused by an opening valve plus
working pressure in the pipe line
B. Water hammer plus static pressure in the pipe line
C. Surge pressure caused by a closing valve plus working
pressure in the pipeline
D. Working water pressure in the pipeline plus static
pressure - Answer-C. Surge pressure caused by a closing
valve plus working pressure in the pipeline
Pressure caused by closing a valve on pressured water
When is a good time to transplant?
A. Summer
B. NEED HELP
C. Late Spring
