BRAE 340 Exam #2 questions and
answers graded A+
Trees irrigated daily by a drip/micro irrigation system will generally transpire _____ water than
trees irrigated under furrow or border strip irrigation systems with a high MAD. Assume almond
trees - correct answer ✔✔more
Location C can be described as - correct answer ✔✔the dirtiest point in the field
How do you determine the five pressures used for pressure compensating emitters? - correct
answer ✔✔Look over your pressure data. Select the highest and lowest pressure readings and
write down three numbers that are spaced evenly between the two
Does the number of emitters per plant make a difference in the DU calculation (assume a new
system)? - correct answer ✔✔Yes, the DU increases with additional emitters per plant
Which of the following methods is used to raise the pressure in a hose? - correct answer
✔✔shut off adjacent hoses using ball valves
You should break up the pressure measurements along two hoses if the pressure difference
along a hose section for a flow rate test is more than: - correct answer ✔✔0.5 psi
Q=kP^x - correct answer ✔✔k= emitter constant
P= pressure (psi)
x= emitter exponent
used to determine flow rate for emitters and therefore DUpressure
, Tortorous path emitter - correct answer ✔✔Drip
Fanjet - correct answer ✔✔Micro
Sub-surface tape/tape in general - correct answer ✔✔drip
Side roll - correct answer ✔✔Sprinkler-fixed grid
Hand-move - correct answer ✔✔Fixed grid sprinkler
Center pivot - correct answer ✔✔Moving sprinkler
Which one of the following irrigation systems is not a pressurized irrigation system?
Select one:
A. Hand move
B. Terraces
C. Drip
D. Linear move
E. Micro spray - correct answer ✔✔Terraces
Which one of these irrigation systems has the lowest capital cost ($/acre)?
A. Side roll/Wheel line
B. Center Pivot
C. Linear move, hose feed
D. Drip on trees
answers graded A+
Trees irrigated daily by a drip/micro irrigation system will generally transpire _____ water than
trees irrigated under furrow or border strip irrigation systems with a high MAD. Assume almond
trees - correct answer ✔✔more
Location C can be described as - correct answer ✔✔the dirtiest point in the field
How do you determine the five pressures used for pressure compensating emitters? - correct
answer ✔✔Look over your pressure data. Select the highest and lowest pressure readings and
write down three numbers that are spaced evenly between the two
Does the number of emitters per plant make a difference in the DU calculation (assume a new
system)? - correct answer ✔✔Yes, the DU increases with additional emitters per plant
Which of the following methods is used to raise the pressure in a hose? - correct answer
✔✔shut off adjacent hoses using ball valves
You should break up the pressure measurements along two hoses if the pressure difference
along a hose section for a flow rate test is more than: - correct answer ✔✔0.5 psi
Q=kP^x - correct answer ✔✔k= emitter constant
P= pressure (psi)
x= emitter exponent
used to determine flow rate for emitters and therefore DUpressure
, Tortorous path emitter - correct answer ✔✔Drip
Fanjet - correct answer ✔✔Micro
Sub-surface tape/tape in general - correct answer ✔✔drip
Side roll - correct answer ✔✔Sprinkler-fixed grid
Hand-move - correct answer ✔✔Fixed grid sprinkler
Center pivot - correct answer ✔✔Moving sprinkler
Which one of the following irrigation systems is not a pressurized irrigation system?
Select one:
A. Hand move
B. Terraces
C. Drip
D. Linear move
E. Micro spray - correct answer ✔✔Terraces
Which one of these irrigation systems has the lowest capital cost ($/acre)?
A. Side roll/Wheel line
B. Center Pivot
C. Linear move, hose feed
D. Drip on trees
