Question 1

It has been determined that booth filters should be changed after 36 hours of spray time. If it takes an average of 47.25 minutes to spray a vehicle, ____________________ vehicles can be sprayed with each booth filter.

Accepted Answer

45.71

Question 2

Technician A says that a rotary screw compressors are capable of producing a larger volume of air than their piston type counterparts. Technician B says that a rotary vane compressors are often used to to produce the shop's breathable air supply. Who is correct?

Accepted Answer

Technician A is correct because rotary screw compressors are indeed capable of producing a larger volume of air compared to piston-type compressors, due to their continuous flow design. Technician B is also correct because rotary vane compressors, known for their reliability and clean operation, are often used in applications requiring high-quality air, such as breathable air supplies in workshops.

Question 3

Technician A says the shop's piston type compressor can easily produce class "D" air that is usable without filtration. Technician B says that piston type compressors are the industry choice because they have a higher duty cycle than any other type of compressor. Who is correct?

Accepted Answer

Neither technician is entirely correct. Class "D" air, which is used in breathing air systems, must be filtered and maintained to strict quality standards. Additionally, while piston compressors are common in many industries, they do not necessarily have the highest duty cycle of all compressor types. Rotary screw compressors, for example, are known for their ability to maintain high output for extended periods of time.

Question 4

Filters should be checked and changed if necessary when the booths will not balance.

Accepted Answer

When booths are not balancing, it could be due to clogged filters. Therefore, checking and changing filters if necessary is recommended to ensure proper booth balance.

Question 5

Though a rotary compressor is more costly to purchase, it has a higher duty cycle than a piston compressor.

Accepted Answer

A rotary compressor has a continuous duty cycle due to its smooth operation, whereas a piston compressor has an intermittent duty cycle. This means that a rotary compressor can run for longer periods without overheating or requiring a break.

Question 6

Technician A says that baking accelerates the curing of the paint. Technician B says the technician should not enter the booth while the baking cycle is occuring. Who is correct?

Accepted Answer

Technician A is correct that baking accelerates the curing process of the paint. This is because the heat helps to evaporate the solvents in the paint, which speeds up the drying time. 
Technician B is also correct that the technician should not enter the booth while the baking cycle is occurring. This is because the high temperatures can be dangerous, and exposure to the fumes can be harmful. It is important to wait until the cycle is complete and the booth has cooled down before entering.

Question 7

Exposing primer to____________________ light can speed up curing time.

Accepted Answer

The answer of Exposing primer to____________________ light can speed up...

Question 8

A shop has five desiccant bead air dryers that need to have their desiccant changed. Each one requires 3.12 pounds of desiccant. How many pounds of desiccant must be purchased to change these filters? (Desiccant can only be purchased in one-pound increments.) ____________________ pounds

Accepted Answer

The answer of A shop has five desiccant bead air...

Question 9

Technician A says that air hose size has little affect on the operation of an HVLP spray gun. Technician B says that quick-change air connectors used for HVLP spray guns should be a smaller size to enable a higher pressure required for their operation. Who is correct?

Accepted Answer

Both technicians are incorrect. Air hose size is important for proper operation of HVLP spray guns, and using quick-change air connectors with a smaller size does not enable a higher pressure required for their operation.

Question 10

Technician A says that once dust and debris are on the floor it won't get into the paint. Technician B says that the booth should be cleaned before each paint job. Who is correct?

Accepted Answer

Technician B is correct. The booth needs to be cleaned before each paint job to remove any dust or debris that may have settled. If left on the floor, it can easily get into the paint and cause imperfections.

Question 11

CRI is a measurement of volume of air circulating in a spray booth.

Accepted Answer

CRI stands for Color Rendering Index, which measures the ability of a light source to accurately render colors. It has nothing to do with air circulation.

Question 12

UV stands for ____________________ light.

Accepted Answer

The answer of UV stands for ____________________ light....

Question 13

Technician A says that CFM is a measurement of air volume. Technician B says that PSI is a measurement of air pressure. Who is correct?

Accepted Answer

CFM stands for cubic feet per minute, which is a measurement of air volume. PSI stands for pounds per square inch, which is a measurement of air pressure. Both technicians are correct in their statements.

Question 14

An air transformer increases the CFM of compressed air.

Accepted Answer

An air transformer, also known as an air amplifier, increases the pressure of the compressed air but does not increase the cubic feet per minute (CFM) of the air flow; it manipulates pressure and flow within the system's capabilities.

Question 15

When a booth is in bake/cure mode, it recycles air back into the booth.

Accepted Answer

When a booth is in bake/cure mode, it uses a recirculation system that recycles the air within the booth. This is done to maintain the temperature and ensure that the paint or coating being applied is properly baked or cured.

Question 16

Technician A says that balancing a booth to slightly positive air flow will help with contamination. Technician B says that balancing a booth to slightly negative air flow will help with contamination. Who is correct?

Accepted Answer

Balancing a booth to slightly negative air flow helps with contamination because it prevents dust and overspray from escaping into the surrounding area, keeping the environment cleaner.

Question 17

Technician A says that a piping loop air supply means the air supplied is the same to all parts of the shop. Technician B says that with a piping loop system, air flows in only one direction. Who is correct?

Accepted Answer

Technician A is correct because a piping loop air supply system is designed to ensure that air is evenly distributed throughout the shop, meaning the air supplied is the same to all parts. Technician B is incorrect because in a loop system, air can flow in multiple directions, not just one, to maintain consistent pressure and supply throughout the loop.

Question 18

Technician A says that regular maintenance will make the cleaning of a booth before each job faster. Technician B says that if the booth will not balance, the filters may be in need of changing. Who is correct?

Accepted Answer

Both technicians are correct. Regular maintenance can prevent the buildup of dirt and debris in the booth, making cleaning easier and faster. If the booth is not balanced, it could be due to clogged or dirty filters, which may need to be changed to improve airflow and balance.

Question 19

Technician A says that clean booth filters helps ensure a clean paint job. Technician B says that the time spent on maintaining a clean spray area will reduce the time spent on detailing the vehicle later. Who is correct?

Accepted Answer

Both technicians are correct. Clean booth filters help to ensure that paint particles do not contaminate the surface being painted. Additionally, maintaining a clean spray area reduces the chances of dust or debris landing on the paint surface, which can reduce the amount of detailing needed later.

Question 20

Breathable air used for air supply respirators must be class ____________________ air.

Accepted Answer

The answer of Breathable air used for air supply respirators...

Quiz 22: Refinishing Shop Equipment