Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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A mechanical power transmission system receives power from the
___________.
a. | driven device | c. | prime mover | b. | driver | d. | B and C |
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2.
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The purpose for having a clutch connecting two shafts together is to
___________.
a. | allow the two shafts to be disconnected while running | c. | allow for easier assembly and
disassembly of the drive system | b. | multiply the torque of the drive
shaft | d. | change the direction
of rotation |
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3.
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The three types of shaft-to-adjacent-shaft power transmission are
______________.
a. | belt drive, clutch and gear drive | c. | belt drive, chain drive and gear
drive | b. | clutch, direct coupling and gear drive | d. | flexible coupling, direct coupling, and sleeve
coupling |
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4.
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Some rules for safe dress to wear around machinery when it is running are
___________.
a. | wear safety glasses and gloves at all times | c. | wear bright colored
clothing | b. | wear tight fitting clothing and heavy duty shoes | d. | wear light weight, loose fitting
clothing |
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5.
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________________ may remove a lockout on the power source of a piece of
mechanical equipment.
a. | Only the instructor | c. | Only the person who installed the lockout | b. | Any two
people | d. | Any person familiar
with the mechanical equipment |
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6.
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A machine foundation should be designed to support the load of the machine,
maintain the alignment between coupled components, and ______________.
a. | be easily removed | c. | blend with the other foundations | b. | be light
weight | d. | absorb any vibration
created by the machine |
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7.
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An industrial machine foundation usually consists of _________________.
a. | asphalt | c. | solid concrete | b. | wooden beams | d. | existing floor
material |
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8.
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A spirit level can be used _____________.
a. | in the vertical or horizontal position | c. | only in the horizontal
position | b. | only in the vertical position | d. | in any position |
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9.
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The adjustable motor mount is used __________________.
a. | when it is routinely necessary to change the tention on a belt or chain
drive | c. | when it is necessary to change the size of the motor | b. | to vary the motor
speed | d. | to compensate for
wear on the motor bearings |
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10.
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The most common fastener used to attach a motor to a bedplate is a hex head bolt
with _______________.
a. | a lock washer and a nut | c. | two flat washers, a lock washer,
and a nut | b. | a flat washer, a lock washer, and a nut | d. | two flat washers, two lock washers, and a
nut |
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11.
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A ____________ bolt size should be selected to fit through a 1/2 inch hole in
the foot of a motor mount.
a. | 1/2 inch | c. | 9/16 inch | b. | 7/16 inch | d. | 1/4 inch |
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12.
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In addition to dress rules, another rule to follow with machinery is
_______________.
a. | to have someone else in the work area | c. | do not work on wet
floors | b. | enter a work area while the machine is running | d. | to keep tools out in the work area for easy
access |
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13.
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The grade of a bolt can be determined by ____________________.
a. | measuring the bolt diameter | c. | counting its threads per
inch | b. | measuring the bolt length and diameter | d. | the marking on the head of the
bolt |
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14.
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A soft foot condition on a motor mount should be corrected by
________________.
a. | shimming one foot only | c. | ending the soft foot on the motor base | b. | shimming all four
feet | d. | shimming two
diagonally opposite feet |
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15.
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A bedplate is a solid piece of metal usually made of __________________.
a. | copper | c. | brass | b. | steel | d. | cast iron |
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16.
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The device most often used to orient a surface so it is either parallel or
perpendicular to the ground is a ______________.
a. | measuring tape | c. | plum bob | b. | spirit level | d. | laser alignment
device |
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17.
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One revolution per second is equal to ______________.
a. | 1 RPM | c. | 60 RPM | b. | 1000 RPM | d. | 6 RPM |
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18.
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To measure motor RPM, the rubber-tipped shaft on a handheld tachometer must be
held against the ____________.
a. | end of the spinning motor shaft | c. | power cord while the motor is
running | b. | base or motor foot | d. | motor shaft, but only when the motor is stopped |
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Matching
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SEGMENT 1
Note: some answers may apply to
multiple questions.
a. | thermal | f. | should | b. | force;
motion | g. | true | c. | gears | h. | should not | d. | coupling | i. | false | e. | do not operate |
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19.
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The purpose of a mechanical transmission system is to transmit ________ and
________ from one device to another.
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20.
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Three methods of mechanical power transmission are electrical, ________, and
fluid.
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21.
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Two methods of axial power transmission commonly use are _________ and
clutches.
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22.
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Three methods of shaft-to-adjacent-shaft power transmission are belt drives,
chain drives, and ________ drives.
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23.
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Safety glasses ____________ (should/should not) be worn at all times.
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24.
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Long sleeves _________ (should/should not) be rolled up.
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25.
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Lockout/tagout devices __________ (should/should not) be used to lock out the
power switch.
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26.
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A tagout tag should clearly read _______.
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27.
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The only person who should remove a lockout/tagout from a powr source is the
person who installed it.
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SEGMENT 2
a. | bubble | d. | absorb vibration | b. | perpendicularity | e. | structural steel | c. | bedplate |
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28.
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A foundation has three functions: support the load of the machine without
settling, maintain alignment between coupled components, and _________.
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29.
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A foundation for heavy equipment can be made from solid concrete, reinforced
concrete, or _________.
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30.
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A(n) _________ placed on a foundation provides a rigid, level surface for
mounting components.
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31.
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A spirit level is used to measure _______ and parallelism of a surface with the
ground.
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32.
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A spirit level has liquid filled tubes containing a(n) _______ and two
alignment marks.
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SEGMENT 3
a. | flat | d. | foot | b. | shims | e. | diameter | c. | c-face
mount |
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33.
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The ____ mount consists of tabs or feet which are attached at the four corners
of the motor.
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34.
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A(n) _________ washer makes sure that the bolt will not pull through the
mounting hole.
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35.
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When selecting a fastener to mount a motor, the nut thickness should be equal
to the ________ of the bolt’s threads.
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36.
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________ are placed under the mounting feet of a motor as part of the leveling
process.
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37.
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The ________ mount is used to mount the driven component directly to the motor
face.
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SEGMENT 4
Note: some answers may apply to
multiple questions.
a. | photo | c. | revolutions per
minute | b. | speedometer | d. | tachometer |
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38.
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The rotational speed of a motor is measured in __________.
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39.
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The device that is most often used to measure motor speed is the
______.
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40.
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A handheld mechanical tachometer works in much the same manner as the ______ in
a car.
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41.
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A(n) ___________ tachometer determines motor shaft speed by counting the number
of times a piece of reflective tape passes through the light.
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42.
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A(n) ________ tachometer has an interal gear system that converts the rotating
motion of a shaft into a reading on a dial indicator.
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