Module 2 Flashcards
a system that uses a gas to transmit force
Pneumatic system
a push or pull exerted on an object to change its position or movement
Force
the weight of an object for a specific value or unit of measure
Density
the amount of force (lb) exerted on an object or substance, divided by the area (in2) over which the force is exerted
Pressure
movement of air layers in nearly parallel lines
Streamline (laminar) flow
viscosity of air molecules; air’s resistance to flow
Dynamic viscosity
The “fluid” in a fluid power system can be either a(n) _____ or a(n) _____.
Gas, Liquid
In a pneumatic system, the force that does the work is usually supplied in the form of _____.
Compressed air
The pressure in a compressed air system is caused by the resistance of the components and the compressor _____ valves.
Discharge
The amount of force required to start an object in motion or change its motion is determined by the object’s _____.
Inertia
Gauge pressure (psig) indicates air pressure _____ atmospheric pressure.
Above
The amount of work done by a cylinder having a 10 in2 piston area and a 12 in. stroke when operated at 50 psi equals _____ ft-lb.
500
Power is calculated by dividing the amount of work done by the _____.
Time it took to do the work
The mechanical energy in a compressed air system is produced by the _____.
Compressor
The equation P1 x V1 = P2 x V2 means that even though the pressure and volume of a gas change, their total product is always _____.
Equal or Same
Charles’s Law says that if the volume of a gas is unchanged, its pressure will vary with its _____.
Temperature
If a 100 lb force is applied to one of two equal-sized pistons, the second piston will produce _____ lb of force.
100
What would the output force be if a 50 lb force is applied to a piston having an area of 10 in2 and transferred to a piston having an area of 75 in2?
375 lb of force
For every increase in pneumatic force in a pneumatic system, there is a(n) _____ in travel.
Decrease
The ideal airflow in a pneumatic system is called _____ airflow.
Streamline
The viscosity of air is a measure of the air’s _____.
Internal Friction
In an ideal compressed air system, the total energy (kinetic and potential) always remains _____.
Constant
