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MILLWRIGHT LEVEL 3 PNEUMATICS
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MILLWRIGHT LEVEL 3 PNEUMATICS
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MILLWRIGHT LEVEL 3 PNEUMATICS FINAL EXAMNEWEST ACTUAL EXAM COMPLETE 100 QUESTIONS
AND CORRECT DETAILED ANSWERS
The ___ of an applied force is transmitted equally in all directions throughout a
confined fluid under the form of fluid pressure. - ANSWER: intensity
When forces are multiplied with a fluid power system, ___ is sacrificed. - ANSWER:
distance
An actuator converts fluid pressure into ___ force - ANSWER: mechanical
At sea level, a vacuum gage reads 6 in. Hg which is actually 24 in Hg on the ___ scale.
- ANSWER: absolute
A ___ pressure gage is generally more accurate than a plunger type gage. - ANSWER:
bourbon tube
An intensifier multiplies fluid ___. - ANSWER: pressure
___ inches of mercury vacuum is the same as atmospheric pressure. - ANSWER:
29.92
When a gas volume is reduced as in a compressor, gas ___ increases and
temperature ___. - ANSWER: pressure, increases
A hot gas has ___ molecules than a cool gas. - ANSWER: faster moving
In a pneumatic system, the potential energy of compressed air is transformed into
___ - ANSWER: kinetic energy and heat.
Flow rate in a pneumatic system is expressed as ___ - ANSWER: CFM
When a gas volume is expanded, gas pressure ___ and ___ decreases. - ANSWER:
decreases, temperature
In a pneumatic system, fluid flow occurs when air is allowed to ___ - ANSWER:
expand.
Inefficiency in a pneumatic system is generally the result of ___ - ANSWER: friction,
fluid changing direction, and heat of compression.
___ air is defined as air at sea level with a temperature of 68 degrees Fahrenheit and
a relative humidity of 36%. - ANSWER: Standard
, Critical velocity in a pneumatic system is achieved when downstream pressure
reaches ___ of upstream pressure. - ANSWER: 53%
In what condition is a pressure regulator found? - ANSWER: A normally open
condition.
What function does a pressure switch perform in a pneumatic system? - ANSWER:
Cuts in and cuts out a compressor.
What insures that the stored pressure energy of an air receiver is not unnecessarily
wasted at an actuator? - ANSWER: A pressure regulator.
Where must pressure be controlled in a pneumatic system? - ANSWER: After a
compressor and after an air receiver.
What determines an actuator's speed of doing work? - ANSWER: The speed at which
an actuator is filled and exhausted of air.
How does a flow control valve in a pneumatic system work? - ANSWER: It operates
by causing a restriction.
How must energy in a pneumatic system always be used? - ANSWER: Under
complete control.
What do valves control in a pneumatic system? - ANSWER: Direction of flow, rate of
flow, and maximum pressure.
What do all valves basically consist of? - ANSWER: A body and an internal moving
part.
In what condition is a safety relief valve found? - ANSWER: A normally closed system.
Compressors convert mechanical energy transmitted by a prime mover into ___
energy of compressed air. - ANSWER: potential
A two stage piston compressor has a(n) ___ where compressed air is cooled while
passing to a second stage. - ANSWER: intercooler
Compressor may be displacement or ___ - ANSWER: dynamic.
As altitude increases the output capacity of an air compressor ___ - ANSWER:
decreases.
According to OSHA, an unprotected person at work amy occupy a room for ___
hours at a sound level of 100 dBA. - ANSWER: two
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