ASE B2 Auto Paint Exam Prep practice questions and answers 2026. Tap an option to test yourself — you'll see the correct answer and a plain-English explanation for every question. Free, no login.
Q11What is the proper procedure for adjusting the spray pattern on an HVLP gun?
✓ Correct answer: B. Adjust pattern control first, then fluid control, then air pressure
The proper procedure is to adjust the pattern control knob first to set the shape/size of the pattern, then adjust the fluid control to determine how much material flows, and finally set the air pressure to achieve proper atomization.
Q12Which component of a spray gun controls the amount of paint that flows through the gun?
✓ Correct answer: A. Fluid needle
The fluid needle controls the amount of paint that flows through the gun. It works in conjunction with the fluid tip to regulate how much material exits the spray gun when the trigger is pulled.
Q13What could cause a spray gun to produce a heavy concentration of material on the right side of the pattern?
✓ Correct answer: D. Damaged or dirty air cap hole on the left side
A damaged or dirty air cap hole on the left side would cause a heavy concentration of material on the right side of the pattern. This happens because the balanced air flow is disrupted, causing more material to flow to the opposite side.
Q14When maintaining spray guns, which of these practices is MOST important?
✓ Correct answer: C. Using the correct cleaning solvent for the type of coating
Using the correct cleaning solvent for the type of coating is most important. Using the wrong solvent can damage gun components, leave residue that affects future spraying, or fail to properly clean the gun.
Q15What is the main advantage of a gravity-feed spray gun compared to a siphon-feed gun?
✓ Correct answer: B. Better transfer efficiency
The main advantage of a gravity-feed spray gun is better transfer efficiency. The paint flows down with gravity, requiring less air pressure for atomization, which results in less overspray and better material utilization.
Q16What would likely happen if the fluid needle spring in a spray gun is worn or damaged?
✓ Correct answer: A. The gun may continue to spray when the trigger is released
If the fluid needle spring is worn or damaged, the gun may continue to spray when the trigger is released. The spring is responsible for pulling the needle back to close the fluid passage when pressure is released from the trigger.
Q17What is the recommended distance to hold an HVLP spray gun from the surface being painted?
✓ Correct answer: D. 6-8 inches
The recommended distance for an HVLP spray gun is 6-8 inches from the surface. This distance allows for optimal atomization and transfer efficiency while maintaining proper coverage and avoiding defects.
Q18Technician A says that the air compressor should have adequate CFM (cubic feet per minute) capacity for the spray gun being used. Technician B says that water traps should be used in the air line to prevent moisture contamination. Who is right?
✓ Correct answer: C. Both A and B
Both technicians are correct. The air compressor must have adequate CFM capacity to maintain proper air pressure for the spray gun, and water traps are essential to prevent moisture contamination that can cause finish defects.
Q19Painter A says that delamination is often caused by improper surface cleaning before paint application. Painter B says that delamination can result from applying clearcoat too soon after basecoat application. Who is right?
✓ Correct answer: B. Both A and B
Both painters are correct. Delamination (separation of paint layers) can be caused by improper surface cleaning before application and by applying clearcoat before the basecoat has adequately flashed, preventing proper adhesion between layers.
Q20Which of these is the most likely cause of paint blistering appearing several weeks after the refinish job?
✓ Correct answer: A. Trapped moisture or solvents under the paint surface
Trapped moisture or solvents under the paint surface is the most common cause of delayed blistering, as it creates vapor pockets that eventually push outward forming blisters weeks after application.
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