CFA Application Equipment and Calibration 2

Question 1

When calibrating a rotary spreader, what does the 'effective spread width' refer to?

Accepted Answer

The actual width of coverage that achieves the target application rate

Answer

The physical width of the spreader hopper

Answer

The distance between the spreader wheels

Answer

The maximum possible throw distance of the material

Question 2

A granular spreader is set to apply 3 lbs per 1,000 sq ft. After calibration, it actually applies 3.6 lbs per 1,000 sq ft. What is the percent error?

Accepted Answer

20%

Answer

10%

Answer

15%

Answer

25%

Question 3

Which nozzle type is best suited for applications requiring low drift and good canopy penetration?

Accepted Answer

Air-induction (venturi) nozzle

Answer

Flat-fan nozzle

Answer

Hollow cone nozzle

Answer

Full-cone nozzle

Question 4

What effect does increasing boom height have on spray pattern overlap from flat-fan nozzles?

Accepted Answer

Overlap increases, improving uniformity up to a point

Answer

Overlap decreases, causing streaking

Answer

Boom height has no effect on overlap

Answer

Overlap remains constant regardless of height

Question 5

During a jug test, you collect 18.5 oz from a nozzle in 30 seconds. The target output is 20 oz per 30 seconds. What action should you take?

Accepted Answer

Accept the output as within 7.5% tolerance

Answer

Replace the nozzle immediately

Answer

Increase system pressure to compensate

Answer

Decrease travel speed to compensate

Question 6

What is the primary reason for conducting a spray system pressure check at the boom rather than at the pump?

Accepted Answer

Pressure drops occur through hoses, fittings, and filters between pump and boom

Answer

Boom pressure is always higher than pump pressure

Answer

Pump gauges are typically inaccurate

Answer

Regulations require boom-level measurements only

Question 7

When calibrating a liquid fertilizer applicator, you travel 200 feet and collect 0.5 gallons from the system. The boom is 20 feet wide. What is the application rate in gallons per acre?

Accepted Answer

54.4 gal/acre

Answer

108.9 gal/acre

Answer

43.6 gal/acre

Answer

217.8 gal/acre