AERIAL APPLICATION PRACTICE TEST EXAM 2025/2026
QUESTIONS AND ANSWERS RATED A+
✔✔Smaller slower droplets are:
a. Less likely to shrink than larger fast moving droplets.
b. More likely to stay where they are released.
c. Are more susceptible to evaporation than larger droplets.
d. Are not affected by wind speed. - ✔✔Are more susceptible to evaporation than larger
droplets
✔✔A very useful tool that an aerial applicator has for measuring droplet deposition on
the target is:
a. Measuring prop slip stream turbulence.
b. Placing more nozzles on the right semi-span on the aircraft.
c. Fly over water.
d. Pattern testing. - ✔✔Pattern testing
✔✔A fixed wing aircraft with a symmetrical nozzle arrangement disperses liquid spray
from a height of 10 feet or less as it flies directly into the wind. More spray will be
deposited to the left of the centerline of flight due to the slipstream turbulence caused by
the:
a. Weather inversion.
b. Wingtip vortices.
c. Clockwise rotation of the propeller.
d. None of the above. - ✔✔Clockwise rotation of the propeller
✔✔Slipstream turbulence carries some spray droplets from the right semispan nozzles
to the target area beneath and to the left of the fuselage:
a. True
b. False - ✔✔True
✔✔When building the boom, you can compensate for the slipstream turbulence caused
by the clockwise rotation of the propeller by placing ___ nozzles on the right half of the
boom than on the left half:
a. Fewer
b. More - ✔✔More
✔✔The slipstream turbulence caused by the clockwise rotation of the propeller on a
fixed wing aircraft has less effect on the deposition of spray droplets within the swath
width when spraying heights are above ___ feet:
a. 1,000
b. 100
c. 50
d. 10 - ✔✔10
, ✔✔Pattern testing can be accomplished by adding a fluorescent dye to the spray
material and spraying over sample cards or paper attached to suitable holders and
placed in a row perpendicular to the wind.
a. True
b. False - ✔✔True
✔✔Pattern testing can give the following:
a. A visual estimate of spray uniformity.
b. Droplet size distribution.
c. Effective swath width.
d. All of the above - ✔✔All of the above
✔✔The pilot must determine spraying pressure, volume, spray mixture, altitude and air
speed expected to deliver the most desirable spray pattern before running a pattern
test. Changes aimed to improve performance in the system can be made and spray
pattern test can be repeated until optimum results are obtained.
a. True
b. False - ✔✔True
✔✔Pattern testing can give a visual estimation of maximum effective swath width, spray
uniformity, and droplet size. After pattern testing, the best way to change volume is to
alter nozzle size.
a. True
b. False - ✔✔True
✔✔During pattern testing, determining nozzle placement on the boom to fill in spray
gaps is by:
a. Trial and error.
b. Computer analysis.
c. Using published tables.
d. None of the above - ✔✔Trial and error
✔✔When changing nozzle booms, air speed, pesticides and adjuvants, the aircraft
should always be recalibrated and pattern tested again.
a. True
b. False - ✔✔True
✔✔Vertical plate boom hangers restrict airflow from inboard toward the wingtip, and can
affect the spray pattern.
a. True
b. False - ✔✔True
QUESTIONS AND ANSWERS RATED A+
✔✔Smaller slower droplets are:
a. Less likely to shrink than larger fast moving droplets.
b. More likely to stay where they are released.
c. Are more susceptible to evaporation than larger droplets.
d. Are not affected by wind speed. - ✔✔Are more susceptible to evaporation than larger
droplets
✔✔A very useful tool that an aerial applicator has for measuring droplet deposition on
the target is:
a. Measuring prop slip stream turbulence.
b. Placing more nozzles on the right semi-span on the aircraft.
c. Fly over water.
d. Pattern testing. - ✔✔Pattern testing
✔✔A fixed wing aircraft with a symmetrical nozzle arrangement disperses liquid spray
from a height of 10 feet or less as it flies directly into the wind. More spray will be
deposited to the left of the centerline of flight due to the slipstream turbulence caused by
the:
a. Weather inversion.
b. Wingtip vortices.
c. Clockwise rotation of the propeller.
d. None of the above. - ✔✔Clockwise rotation of the propeller
✔✔Slipstream turbulence carries some spray droplets from the right semispan nozzles
to the target area beneath and to the left of the fuselage:
a. True
b. False - ✔✔True
✔✔When building the boom, you can compensate for the slipstream turbulence caused
by the clockwise rotation of the propeller by placing ___ nozzles on the right half of the
boom than on the left half:
a. Fewer
b. More - ✔✔More
✔✔The slipstream turbulence caused by the clockwise rotation of the propeller on a
fixed wing aircraft has less effect on the deposition of spray droplets within the swath
width when spraying heights are above ___ feet:
a. 1,000
b. 100
c. 50
d. 10 - ✔✔10
, ✔✔Pattern testing can be accomplished by adding a fluorescent dye to the spray
material and spraying over sample cards or paper attached to suitable holders and
placed in a row perpendicular to the wind.
a. True
b. False - ✔✔True
✔✔Pattern testing can give the following:
a. A visual estimate of spray uniformity.
b. Droplet size distribution.
c. Effective swath width.
d. All of the above - ✔✔All of the above
✔✔The pilot must determine spraying pressure, volume, spray mixture, altitude and air
speed expected to deliver the most desirable spray pattern before running a pattern
test. Changes aimed to improve performance in the system can be made and spray
pattern test can be repeated until optimum results are obtained.
a. True
b. False - ✔✔True
✔✔Pattern testing can give a visual estimation of maximum effective swath width, spray
uniformity, and droplet size. After pattern testing, the best way to change volume is to
alter nozzle size.
a. True
b. False - ✔✔True
✔✔During pattern testing, determining nozzle placement on the boom to fill in spray
gaps is by:
a. Trial and error.
b. Computer analysis.
c. Using published tables.
d. None of the above - ✔✔Trial and error
✔✔When changing nozzle booms, air speed, pesticides and adjuvants, the aircraft
should always be recalibrated and pattern tested again.
a. True
b. False - ✔✔True
✔✔Vertical plate boom hangers restrict airflow from inboard toward the wingtip, and can
affect the spray pattern.
a. True
b. False - ✔✔True
