Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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The control devices used in pneumatics are called ___________________.
a. | compressors | c. | valves | b. | actuators | d. | conductors |
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2.
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Pressure is a measure of _____________.
a. | distance | c. | time | b. | volume | d. | force intensity |
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3.
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Pneumatic symbols have been standardized by ISO which stands for
________________.
a. | International Standards Orginization | c. | International Systems
Organization | b. | International Organization for Standardization | d. | Information Superhighway
Organization |
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4.
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Which of the following is not a pneumatic safety rule?
a. | Do not point compressed air at eyes. | c. | Use any container for compressed
air. | b. | Use low pressure when cleaning with air. | d. | Use safety
glasses. |
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5.
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A regulator is used in pneumatics to ____________.
a. | remove dirt from the air | c. | connect three branch circuits to a
supply | b. | shut-off the compressor | d. | provide a constant pressure to the circuit. |
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6.
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The poppet of a pressure regulator is opened by the __________.
a. | upstream pressure | c. | adjustment spring | b. | downstream pressure | d. | poppet spring |
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7.
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Filters should be used on all pneumatic systems because atmospheric air contains
__________.
a. | carbon | c. | dust | b. | lead | d. | Viton |
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8.
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Smaller dirt particles are removed from the air by the filter’s
____________.
a. | deflector | c. | element | b. | baffle | d. | bowl |
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9.
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Industry uses quick-connect fittings when ________________.
a. | ever possible | c. | the equipment is used at high altitudes | b. | low cost is
desired | d. | there is a frequent
need to connect and dissconnect a hose |
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10.
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This fitting is used to connect two branch circuits to a single supply
line.
a. | Elbow | c. | Male connector | b. | Tee | d. | Plug |
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11.
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Which pneumatic component provides straight line motion?
a. | Motor | c. | Cylinder | b. | DCV | d. | Muffler |
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12.
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This assembly moves inside the barrel-shaped body of the cylinder.
a. | Piston/rod | c. | Element | b. | Poppet/spring | d. | Vane |
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13.
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DCV stands for _______________.
a. | Digital Control Variable | c. | Directional Control
Valve | b. | Dynamic Cost Variable | d. | Directional Control Vane |
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14.
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The 3-position, 4-way DCV is held in the mid-position by the
________________.
a. | operator | c. | body | b. | spool | d. | springs |
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15.
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Which fluid is most commonly used in pneumatics?
a. | Air | c. | Water | b. | Oxyacetylene | d. | Oil |
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Matching
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Segment 1
a. | range | d. | Air | b. | actuator | e. | force | c. | pneumatic |
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16.
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_____________ is the fluid most used in pneumatics to transmit power.
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17.
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The power output device of a pneumatic system is known as the
_________.
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18.
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Pressure is a measure of _________ intensity.
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19.
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The maximum pressure indication on a pressure gauge is called the _____________
of the gauge.
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20.
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A(n) ___________ diagram shows how the components in a circuit are
connected.
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Segment 2
a. | control | e. | deflector | b. | self bleed | f. | filter | c. | whip | g. | poppet | d. | CCW |
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21.
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The device used to clean air is called a(n) ____________.
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22.
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A pressure regualtor is used to _____________ downstream pressure.
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23.
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To decrease regulated pressure, turn the regulator adjustment knob
___________.
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24.
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A pressure regulator’s __________ opens and closes to provide the correct
pressure downstream by restricting the air flow.
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25.
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The outlet pressure of a regulator automatically drops off as pressure is
decreased if it has a(n) ___________ feature.
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26.
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The _____________ of the filter makes the air spin to throw heavier particles
against the sides of the bowl.
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27.
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Air flow out of an opened and unrestricted hose end will cause the hose to
___________.
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Segment 3
a. | Quick-Connect | d. | check | b. | tee | e. | cross | c. | pull |
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28.
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______________ fittings allow fast and easy assembly and disassembly of
circuits.
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29.
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A fitting used to connect three branch circuits to a supply is called a(n)
______________.
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30.
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A(n) ___________ allows you to connect two branches together.
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31.
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The device that keeps the air from escaping from the quick-connect filling is
called a(n) _____________ valve.
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32.
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Always _______ on the tube after making a connection to ensure that it is
firmly connected.
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Segment 4
a. | cylinder; DCV | e. | double-acting | b. | spool | f. | 4;3 | c. | flow | g. | cylinder | d. | lever; solenoid | h. | spring |
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33.
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The actuator that produces linear motion is called a(n) ______________.
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34.
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The number of ways that a directional control valve has defines the number of
__________ paths for the fluid to travel through the valve.
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35.
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Four methods used to shift (move) a DCV spool are manual palm button,
_________, ___________, and pneumatic.
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36.
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Double-acting cylinder direction can be reversed by switching the hose
connections at the _________ or at the __________.
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37.
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The type of cylinder that needs to be powered in both directions is called a(n)
_____________ cylinder.
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38.
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The spool of a 3-position DCV is held in the middle position by a(n)
___________.
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39.
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The four-way, 3-position pneumatic DCV components are valve body, operator,
springs, and ________________.
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40.
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A4/3 DCV has __________ ways and _____________ positions.
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