IDIS 403 CH 13 EXAM QUESTIONS WITH VERIFIED SOLUTIONS LATEST UPDATE 2026
The air entering a desiccant air dryer can have a maximum temp of __ F - Answers 94 F
Drip lubricators must be installed no more than __ " away from the components that require
lubrication. - Answers 10
A __ is a device designed to lower the temp of compressed air to 35 F - Answers refrigerated air dryer
It takes __ cu ft of atmospheric air to produce 1.0 cu ft of compressed air at 100 psi - Answers 7.8
Oil contamination in a pneumatic system can possibly come from __ - Answers over lubrication of the
air compressor.
At standard pressure and temp the weight of 1 cu ft of air equals __ lb - Answers 0.076
Pressure drops on pneumatic filters should not exceed __ psi. - Answers 2
A properly maintained coalescing filter should have approx __ operational hours. - Answers 2000
__ is small quantities of liquid condensation. - Answers moisture
Most contaminants enter the system through the __ - Answers air intake
A __ is a device that removes water vapor from compressed air though absorption. - Answers
desiccant air dryer
A __ is used to remove contaminants from the air before it travels to the inlet of the compressor. -
Answers intake filter
A __ is a heat exchanger used for cooling the discharger air from an air compressor. - Answers
aftercooler
Dew point is also know as __ - Answers saturation temp
__ is the pressure differential between upstream and downstream airflow caused by resistance. -
Answers pressure drop
A venturi is a tube that creates a __ - Answers vortex
Surface-type elements are usually constructed of __ - Answers treated paper
__ is the conversion of a substance from a vapor state to a denser solid state usually initiated by a
reduction of temp during a vapor state. - Answers Condensation
A __ is a pneumatic device that is used to filter, regulate, and lubricate compressed air before it
reaches the point of work. - Answers filter-regulator-lubricator (FRL)
The higher the temp of the air the higher percentage of __ it can hold. - Answers water vapor
Coalescing filters are sometimes referred to as __ filters - Answers in-line liquid
Solid contaminants in pneumatic systems are rated in __. - Answers Microns
__ is the amount of moisture in the air. - Answers Humidity
Depth-type elements are typically constructed from a __ - Answers bronze alloy.
A __ is a pneumatic device that separates moisture from compressed air by forcing it to flow against
baffles. - Answers moisture separator
A __ is a device that injects a lubricant into the air flow. - Answers lubricator
__ air is air that holds as much moisture as it is capable of holding. - Answers staturated
A __ is a normally open pressure valve that is used to control down-stream pressure. - Answers
regulator
A __ filter is a filter that removes contaminants from within a pneumatic system. - Answers inline
filter
__ air is air located inside a facility. - Answers Ambient
The air entering a desiccant air dryer can have a maximum temp of __ F - Answers 94 F
Drip lubricators must be installed no more than __ " away from the components that require
lubrication. - Answers 10
A __ is a device designed to lower the temp of compressed air to 35 F - Answers refrigerated air dryer
It takes __ cu ft of atmospheric air to produce 1.0 cu ft of compressed air at 100 psi - Answers 7.8
Oil contamination in a pneumatic system can possibly come from __ - Answers over lubrication of the
air compressor.
At standard pressure and temp the weight of 1 cu ft of air equals __ lb - Answers 0.076
Pressure drops on pneumatic filters should not exceed __ psi. - Answers 2
A properly maintained coalescing filter should have approx __ operational hours. - Answers 2000
__ is small quantities of liquid condensation. - Answers moisture
Most contaminants enter the system through the __ - Answers air intake
A __ is a device that removes water vapor from compressed air though absorption. - Answers
desiccant air dryer
A __ is used to remove contaminants from the air before it travels to the inlet of the compressor. -
Answers intake filter
A __ is a heat exchanger used for cooling the discharger air from an air compressor. - Answers
aftercooler
Dew point is also know as __ - Answers saturation temp
__ is the pressure differential between upstream and downstream airflow caused by resistance. -
Answers pressure drop
A venturi is a tube that creates a __ - Answers vortex
Surface-type elements are usually constructed of __ - Answers treated paper
__ is the conversion of a substance from a vapor state to a denser solid state usually initiated by a
reduction of temp during a vapor state. - Answers Condensation
A __ is a pneumatic device that is used to filter, regulate, and lubricate compressed air before it
reaches the point of work. - Answers filter-regulator-lubricator (FRL)
The higher the temp of the air the higher percentage of __ it can hold. - Answers water vapor
Coalescing filters are sometimes referred to as __ filters - Answers in-line liquid
Solid contaminants in pneumatic systems are rated in __. - Answers Microns
__ is the amount of moisture in the air. - Answers Humidity
Depth-type elements are typically constructed from a __ - Answers bronze alloy.
A __ is a pneumatic device that separates moisture from compressed air by forcing it to flow against
baffles. - Answers moisture separator
A __ is a device that injects a lubricant into the air flow. - Answers lubricator
__ air is air that holds as much moisture as it is capable of holding. - Answers staturated
A __ is a normally open pressure valve that is used to control down-stream pressure. - Answers
regulator
A __ filter is a filter that removes contaminants from within a pneumatic system. - Answers inline
filter
__ air is air located inside a facility. - Answers Ambient
