Systems that involve the use of compressed air are govern by the principles of - Answer-
Pneumatics
Insulation is used in air compressors because - Answer- The compressors surface becomes very
hot
When air is compressed - Answer- Pressure increases
The unit SCFM is a measure of air volume under conditions that are - Answer- Standard
The pressures of compressed air is measured in units of pounds per square inch - Answer- Gauge
Water vapor is removed from compressed air to - Answer- Prevent rusting of the system's
components
Marking one cubic foot of compressed air requires 7 cubic feet of air at - Answer- 100 psi
After coolers must use pipe made from materials that will NOT - Answer- Corrode
The two common types of air dryers are refrigeration and - Answer- Dessicant
In addition to removing moisture from compressed air, refrigeration air dryers are also effective at
removing - Answer- Compressor lubrication oil
Before operating a compressed air tool for the first time, you should - Answer- Refer to the
manufacturer's manual
Hearing protection should be worn when working with many types of compressed air tools
because - Answer- The very high pitched sound can cause hearing damage
Before replacing bits or doing other servicing tasks on any pneumatics tool, always - Answer-
Discharge the pressure
When threading or handling pipe, you should wear gloves - Answer- As protecting against sharp
metal chips
If a compressed air tool functions purely because of low air pressure, the cause is most likely -
Answer- Any improperly secured hose or coupling
A type of compressor that plumbers are NOT likely to encounter in the job is the - Answer-
Centrifugal compressor
After being compressed, the air stored in an - Answer- Air receiver
To prevent injury from lose air hoses, OSHA requires hoses to be secured with cables called -
Answer- Whip checks