MN Pesticide Applicators Cat A and Core Exam

pg. 1 MN Pesticide Applicators Cat A and Core Exam Latest 2025 Complete 200 Actual Exam Questions with Correct Verified Answers/ Graded A+

Which of the following factors has NO effect on off-target pesticide drift?

• Nozzle orientation.
• Spray pressure.
• Constant 3 mph wind.
• Physical properties of the spray mixture. - Correct Answer - C. Constant 3 mph wind.

Wider-angle spray nozzles usually produce droplets than narrower spray nozzles.

• Coarser.
• More uniform.
• Less uniform.
• Finer. - Correct Answer - D. Finer.

The most effective boom lengths for reducing the amount of drift are:

• 90% of the wingspan or the rotor span.
• 75% of the wingspan or the rotor span.
• 65% of the wingspan or the rotor span.
• 50% of the wingspan or the rotor span. - Correct Answer - B. 75% of the wingspan or

the rotor span. 1 / 4

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Aside from external factors, the most important factors affecting off-target

drift are:

• Physical properties of the spray mixture.
• Extremely high or low temperatures.
• The size of the spray droplets and the percentage of droplets within a certain size

range.

• Conditions leading to a temperature inversion layer. - Correct Answer - C. The size

of the spray droplets and the percentage of droplets within a certain size range.

Driftable fines are droplets in the size range of:

• Larger than 500 microns.
• 300 to 500 microns.
• 200 to 300 microns.
• 50 to 200 microns. - Correct Answer - D. 50 to 200 microns.

The droplet size at which spray drift becomes a concern is:

• 50 microns and below.
• 100 microns and below.
• 200 microns and below.
• 300 microns and below. - Correct Answer - C. 200 microns and below.

Aircraft suitable for aerial application of pesticides must be:

• Registered with the U.S. EPA.
• Constructed entirely of corrosion resistant materials.
• Equipped with DGPS navigational equipment. 2 / 4

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• Able to lift, transport, and disperse pesticides safely. - Correct Answer -
• Able to lift, transport, and disperse pesticides safely.

One of the reasons for an adequate vent in the aircraft pesticide tank is to:

• Release excess pressure.
• Allow the pump to function efficiently.
• Prevent a vacuum from altering the normal flow of liquid.
• Keep the pesticide mixture uniform. - Correct Answer - C. Prevent a vacuum from

altering the normal flow of liquid.

The purpose of baffles inside a liquid spray tank is to:

• Assure even mixing of the spray material.
• Prevent extreme pressure changes in the system.
• Reduce sloshing of the liquid during flight.
• Eliminate foaming of the spray mixture. - Correct Answer - C. Reduce sloshing of the

liquid during flight.

Hydraulic agitation of the mixture in the aircraft spray tank requires:

• An external power source.
• Sufficient pump output capacity.
• Baffles mounted inside the tank.
• Proper tank ventilation. - Correct Answer - B. Sufficient pump output capacity.

A proper functioning positive cutoff valve with a suck-back feature will supply pressure to the boom and nozzles when the spray flow is stopped.

• High negative. 3 / 4

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• Low negative.
• High positive.
• Low positive. - Correct Answer - B. Low negative.

The purpose of bleed valves at the ends of the spray boom is to:

• Prevent spray from continuing to flow from nozzles after the spray valve is closed.
• Prevent pressure from building up from trapped air when the spray valve is opened.
• Make cleaning the inside of the spray boom easier.
• Reduce internal corrosion of the spray boom. - Correct Answer - B. Prevent pressure

from building up from trapped air when the spray valve is opened.

To accommodate for the influence of prop wash on spray pattern, it is

necessary to:

• Regulate the output flow to the nozzles.
• Adjust the speed of the aircraft.
• Reposition the nozzles on the spray boom.
• Decrease the pump speed. - Correct Answer - C. Reposition the nozzles on the

spray boom.

The advantage of an electronic sprayer volume controller is that it:

• Maintains the same spray output as airspeed changes.
• Reduces or increases the spray output as airspeed changes.
• Maintains the same spray output as altitude changes.
• Reduces or increases the spray output as altitude changes. -

Correct Answer - B. Reduces or increases the spray output as airspeed changes

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