CPA Application Equipment and Calibration 2

Question 1

When calibrating a boom sprayer, you collect 980 mL from a single nozzle in 30 seconds while the sprayer travels at 5 mph. Which component of the calibration process does this measurement directly represent?

Accepted Answer

Nozzle flow rate

Answer

Collecting output from a nozzle over a set time directly measures nozzle flow rate, which is a key variable in determining application rate.

Question 2

A hydraulic agitation system on a spray tank is primarily used to:

Accepted Answer

Keep pesticide mixtures uniformly suspended

Answer

Hydraulic agitation recirculates tank solution to prevent settling and keep wettable powders or other formulations uniformly suspended.

Question 3

An applicator is using a backpack sprayer with a fan nozzle. To increase coverage width without changing nozzles, the applicator should:

Accepted Answer

Raise the nozzle higher above the target

Answer

Raising a fan nozzle higher above the target widens the spray pattern, though it may also increase drift potential.

Question 4

Which type of pump is most commonly used in low-pressure ground sprayers for pesticide application and is known for its self-priming capability?

Accepted Answer

Roller pump

Answer

Roller pumps are widely used in low-pressure ground sprayers because they are self-priming, durable, and handle a variety of formulations.

Question 5

A strainer screen with a mesh size of 50 is coarser or finer than a screen with a mesh size of 100?

Accepted Answer

Coarser, because fewer openings per inch means larger holes

Answer

Mesh size refers to the number of openings per linear inch, so a 50-mesh screen has fewer, larger openings than a 100-mesh screen.

(CPA) Certified Pesticide Applicator Practice Test

(CPA) Certified Pesticide Applicator Practice Test

CPA Application Equipment and Calibration 2