MMET 401 EXAM 2 CH 11-13 QUESTIONS & ANSWERS
An __________ is a device that increases the pressure of a gas by mechanically
decreasing its volume. - Answer -air compressor
The fastest air speed in any pneumatic system should be no more than ____ fps -
Answer -600
Absolute ___ is the hypothetical temperature at which molecular motion ceases,
precisely -273.15 degrees Celsius (- 459.67 F) - Answer -zero
An ____ is a specialized vessel that provides storage of a gas 0for use in a pneumatic
system - Answer -reciever
______ Law states that when the pressure of a gas is constant, the volume of the gas
has a direct relationship with its absolute temperature - Answer -Charle's
_______ law that states that when the volume of a gas is held constant, the pressure
exerted by the gas has a direct relationship to its absolute temperature - Answer -Gay
Lussac's
In a standard, cubic feet per minute is a measurement; it is assumed that air in the
environment is at ______ F and ______% humidity at 14.7 psia - Answer -68; 36
________ law states that when temperature remains constant, there is an inverse
relationship between pressure and the volume of a gas - Answer -Boyle's
Temperature in R is always approximately ___ degrees greater than the temperature in
F. - Answer -460
Air compressors in pneumatic - Answer -standard cubic feet per minutes (scfm)
______ is the movement of air in a pneumatic system through pipes, tubing, and hoses
that transmit energy produced by the air compressor to the location where it is needed
to accomplish work - Answer -airflow
_____ is a unit of measure that assumes a constant atmospheric environment for air
before it is pushed into a system - Answer -SCFM
an _____ system uses a gas under pressure to create movement - Answer -pneumatic
When __ is compressed it is trapped in a cylinder chamber and the volume of the
chamber is decreased through mechanical means. - Answer -air
, absolute pressure is always ____ psi greater than gauge pressure - Answer -14.6
Pneumatic systems operate on the principles of ____, which states that a fluid can flow,
has no definitive shape, and increases in volume with an increase in temperature -
Answer -fluid mechanics
___ is a gas primarily composed of nitrogen and oxygen, with traces of other gases. -
Answer -air
In a pneumatic system, ____ is rated as the amount of cubic feet that can pass a given
point in one minute, or cubic feet per minute (cfm) - Answer -air flow
absolute pressure is the sum of gauge pressure and _____ pressure - Answer -
atmospheric
the number of cubic feet per minute in an air compressor is determined by the amount
of air pushed into the ____ of the air compressor - Answer -inlet
The ___ gas law covers the values regarding the relationships between the pressure,
volume, and temperature of a gas. - Answer -combined
the term "gas" is derived from the greek word for ______ - Answer -chaos
______ temperature is any temperature on a scale that begins with absolute zero -
Answer -absolute
______ gas law can be applied to find pressure when there are temperature changes,
or to find a temperature when there are pressure changes - Answer -Lussac's
Molecules have no movement at __ R - Answer -0
T/F The larger the diameter of the piping in a pneumatic system, the slower the air
speed - Answer -T
T/F cylinders operated by pneumatic systems are generally used for low-to-medium
force applications - Answer -T
T/F If the gas inside of a receiver cools and the pressure remains constant, then its
volume decreases - Answer -T
T/F the gas that pneumatic systems typically use is a mixture of only nitrogen and
oxygen - Answer -F
T/F the top speed of air is equal to the speed of sound - Answer -T
An __________ is a device that increases the pressure of a gas by mechanically
decreasing its volume. - Answer -air compressor
The fastest air speed in any pneumatic system should be no more than ____ fps -
Answer -600
Absolute ___ is the hypothetical temperature at which molecular motion ceases,
precisely -273.15 degrees Celsius (- 459.67 F) - Answer -zero
An ____ is a specialized vessel that provides storage of a gas 0for use in a pneumatic
system - Answer -reciever
______ Law states that when the pressure of a gas is constant, the volume of the gas
has a direct relationship with its absolute temperature - Answer -Charle's
_______ law that states that when the volume of a gas is held constant, the pressure
exerted by the gas has a direct relationship to its absolute temperature - Answer -Gay
Lussac's
In a standard, cubic feet per minute is a measurement; it is assumed that air in the
environment is at ______ F and ______% humidity at 14.7 psia - Answer -68; 36
________ law states that when temperature remains constant, there is an inverse
relationship between pressure and the volume of a gas - Answer -Boyle's
Temperature in R is always approximately ___ degrees greater than the temperature in
F. - Answer -460
Air compressors in pneumatic - Answer -standard cubic feet per minutes (scfm)
______ is the movement of air in a pneumatic system through pipes, tubing, and hoses
that transmit energy produced by the air compressor to the location where it is needed
to accomplish work - Answer -airflow
_____ is a unit of measure that assumes a constant atmospheric environment for air
before it is pushed into a system - Answer -SCFM
an _____ system uses a gas under pressure to create movement - Answer -pneumatic
When __ is compressed it is trapped in a cylinder chamber and the volume of the
chamber is decreased through mechanical means. - Answer -air
, absolute pressure is always ____ psi greater than gauge pressure - Answer -14.6
Pneumatic systems operate on the principles of ____, which states that a fluid can flow,
has no definitive shape, and increases in volume with an increase in temperature -
Answer -fluid mechanics
___ is a gas primarily composed of nitrogen and oxygen, with traces of other gases. -
Answer -air
In a pneumatic system, ____ is rated as the amount of cubic feet that can pass a given
point in one minute, or cubic feet per minute (cfm) - Answer -air flow
absolute pressure is the sum of gauge pressure and _____ pressure - Answer -
atmospheric
the number of cubic feet per minute in an air compressor is determined by the amount
of air pushed into the ____ of the air compressor - Answer -inlet
The ___ gas law covers the values regarding the relationships between the pressure,
volume, and temperature of a gas. - Answer -combined
the term "gas" is derived from the greek word for ______ - Answer -chaos
______ temperature is any temperature on a scale that begins with absolute zero -
Answer -absolute
______ gas law can be applied to find pressure when there are temperature changes,
or to find a temperature when there are pressure changes - Answer -Lussac's
Molecules have no movement at __ R - Answer -0
T/F The larger the diameter of the piping in a pneumatic system, the slower the air
speed - Answer -T
T/F cylinders operated by pneumatic systems are generally used for low-to-medium
force applications - Answer -T
T/F If the gas inside of a receiver cools and the pressure remains constant, then its
volume decreases - Answer -T
T/F the gas that pneumatic systems typically use is a mixture of only nitrogen and
oxygen - Answer -F
T/F the top speed of air is equal to the speed of sound - Answer -T
