Pest Control Aircraft Pilot Practice Test

Hydraulic agitation in an aircraft spray tank needs what for effective operation?

1. A minimum fluid level

2. High viscosity oil

3. Sufficient pump output capacity

4. Reduced surface tension

The correct answer is: Sufficient pump output capacity

Hydraulic agitation in an aircraft spray tank is primarily dependent on sufficient pump output capacity. This requirement is essential because the pump needs to generate enough flow rate and pressure to effectively mix and circulate the spray solution. Adequate pump output ensures that the chemicals are properly agitated within the tank, helping to maintain a homogeneous solution and preventing the settling of ingredients, which could lead to inconsistent application rates during spraying. In applications where pesticides or other chemicals are used, uniformity in the mixture is critical for effective pest control. Insufficient pump output can result in poor agitation, leading to problems such as clumping or sedimentation of the product, which can adversely affect the performance of the spray. The other options, while they may be factors in the overall operation of a spray tank, do not directly relate to the necessity of pump output capacity for hydraulic agitation. For instance, a minimum fluid level is important to prevent pump cavitation but does not directly influence the agitation process itself. Similarly, high viscosity oil may not be relevant in the context of common agricultural sprays, and while reduced surface tension can enhance the performance of some spray solutions, it isn't a specific requirement for effective hydraulic agitation.