Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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A pump produces ____________.
a. | pressure | c. | flow and pressure | b. | flow | d. | pressure drop |
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2.
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Which of the following is not a type of fixed displacement pump?
a. | Centrifugal | c. | Gear | b. | Vane | d. | Piston |
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3.
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The main function of a needle valve is to _______________.
a. | control pressure | c. | turn off the flow | b. | control the speed of an
acutator | d. | reduce pressure
spikes |
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4.
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The needle valve adjustment screw has a tapered end to adjust the size of the
__________.
a. | orifice | c. | valve body | b. | vane | d. | pressure |
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5.
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Most hydraulic motors are modified designs of ___________.
a. | cylinders | c. | gears | b. | pumps | d. | flow control
valves |
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6.
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The hydraulic motor converts hydraulic flow into _______________.
a. | rotary shaft speed | c. | torque | b. | linear displacement | d. | hydraulic
pressure |
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7.
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Which of the following is not a type of hydraulic piston motor?
a. | Bent axis | c. | Inline | b. | Radial | d. | Spring loaded |
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8.
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Which one hydraulic component may be shown many time in a schematic without
indicating that there are more than one of that component?
a. | Pump | c. | Vented reservoir | b. | Cylinder | d. | Directional control
valve |
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9.
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Flow rate is equal to volume divide by ___________.
a. | pressure | c. | gallons | b. | time | d. | area |
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10.
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Which type of flowmeter must be oriented in a vertical position.
a. | Rotameter | c. | Piston | b. | Turbin | d. | Vane |
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Matching
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Segment 1
a. | gear | d. | volume | b. | turbone | e. | increasing | c. | flow | f. | piston |
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11.
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Hydraulic flow rate can be measured by weight or _________.
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12.
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The two typed of flowmeters used in hydraulics are rotameter and
_________.
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13.
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A(n) _________ pump is the least expensive.
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14.
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A(n) _________ pump is the most efficient.
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15.
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A fixed-displacement pump creates ________ and not pressure.
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16.
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A pump creates flow at its inlet by creating a(n) _________ volume.
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Segment 2
a. | restriction | d. | needle
valve | b. | feathering | e. | speed | c. | two | f. | CW |
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17.
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The __________ of an actuator is determined by the flow rate of oil in the
actuator.
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18.
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To close a needle valve, turn the adjustment know ________.
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19.
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Controlling the amount of DCV shift to control the speed of an actuator is
called __________.
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20.
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The needle valve controls the flow rate by causing a(n) __________.
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21.
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The needle valve body has _______ ports.
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22.
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Flow is restricted through a(n) ____________ regardless of which direction the
oil flows through it.
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Segment 3
a. | flow rate | d. | DCV | b. | gear | e. | rear | c. | piston | f. | motor |
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23.
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The actuator that produces rotary motion is called a(n) ___________.
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24.
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To increase the speed of a hydrualic motor, increase the _________.
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25.
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The three types of hydraulic motors are gear, vane, and ________.
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26.
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The direction of rotation of a motor is determined by viewing the shaft from
the _________ end of the motor.
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27.
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A(n) _______ is used to rapidly change direction of rotation of a
motor.
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28.
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_____________ motors are inexpensive and highly durable under extreme
environmental conditions.
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Segment 4
a. | normal | d. | electric drive
motor | b. | vented resevoir | e. | blocked | c. | reservoir |
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29.
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Unless specifically mentioned, schematic symbols are drawn in the ___________
condition.
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30.
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The one symbol which may be shown many times on a schematic but does not mean
that there are more than one is the ___________.
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31.
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The letter M inside of a circuit indicates _________.
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32.
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Symbols may be rotated or reversed except for the ________ which is always
shown with an open side up.
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33.
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An X across a conductor or connector indicates that it is _________.
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