PLUMBING MOCK EXAM 2025/2026 QUESTIONS WITH
100% CORRECT ANSWERS
Systems that involve the use of compressed air are govern by the principles of - Pneumatics
Insulation is used in air compressors because - The compressors surface becomes very hot
When air is compressed - Pressure increases
The unit SCFM is a measure of air volume under conditions that are - Standard
The pressure of compressed air is measured in units of pounds per square inch - Gauge
Water vapor is removed from compressed air to - Prevent rusting of the system's components
Marking one cubic foot of compressed air requires 7 cubic feet of air at - 100 psi
After coolers must use pipe made from materials that will NOT - Corrode
The two common types of air dryers are refrigeration and - Desiccant
In addition to removing moisture from compressed air, refrigeration air dryers are also effective at
removing - Compressor lubrication oil
Before operating a compressed air tool for the first time, you should - Refer to the manufacturer's
manual
Hearing protection should be worn when working with many types of compressed air tools because -
The very high pitched sound can cause hearing damage
Before replacing bits or doing other servicing tasks on any pneumatics tool, always - Discharge the
pressure
100% CORRECT ANSWERS
Systems that involve the use of compressed air are govern by the principles of - Pneumatics
Insulation is used in air compressors because - The compressors surface becomes very hot
When air is compressed - Pressure increases
The unit SCFM is a measure of air volume under conditions that are - Standard
The pressure of compressed air is measured in units of pounds per square inch - Gauge
Water vapor is removed from compressed air to - Prevent rusting of the system's components
Marking one cubic foot of compressed air requires 7 cubic feet of air at - 100 psi
After coolers must use pipe made from materials that will NOT - Corrode
The two common types of air dryers are refrigeration and - Desiccant
In addition to removing moisture from compressed air, refrigeration air dryers are also effective at
removing - Compressor lubrication oil
Before operating a compressed air tool for the first time, you should - Refer to the manufacturer's
manual
Hearing protection should be worn when working with many types of compressed air tools because -
The very high pitched sound can cause hearing damage
Before replacing bits or doing other servicing tasks on any pneumatics tool, always - Discharge the
pressure
