IRRIGATION TEST EXAM 2025: REAL
VERIFIED QUESTIONS & CORRECT
ANSWERS| PACK OF EXCELLENCE| THE
ULTIMATE KEY TO YOUR SUCCESS.
1. The main factor used to determine how to size down lateral line
piping is ________ - correct answer - Velocity
2. If a system's head spacing is 15' then its row spacing should
be_____ for triangular spacing. - correct answer - 15x.866= 13
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3. What Will happen if a gear driven rotary head is installed at an
angle? - correct answer - The spray pattern will be distorted
and it will have a poor distribution of water.
4. What happens if the rotation of a rotary head is to fast? -
correct answer - The radius will decrease.
5. Changing out the size of the nozzle on a rotary head will also
change _______ - correct answer - GPM of the head. Radius
of throw.
6. An increase in head pressure will _________ - correct answer -
Increase flow rate.
7. As the average wind speed increase. _________ - correct
answer - The head spacing should be decreased.
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8. If you double the flow of water through your piping, the
pressure loss will be __________ . - correct answer - 4 times
greater.
9. Where is the precipitation rate of a spray head the greatest? -
correct answer - Closest to the head.
10. The weight of 1' tall column of water consisting of 12 cubic
inches is ______ . - correct answer - 0.433
11. Water is: - correct answer - not compressed
12. Triangular head spacing. - correct answer - Row spacing =
Head spacing X .866
13. Velocity is: - correct answer - The speed at which water
travels through piping.