True/False
Indicate whether the
statement is true or false.
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1.
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The results of friction are energy loss, generation of heat, and component
wear.
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2.
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There are only two types of mechanical friction.
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3.
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An incline plane is considered a simple machine.
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4.
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Torque is a linear force.
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5.
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Loads imposed by machines can usually be put into three classes: constant
torque, constant horsepower, and variable torque.
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6.
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A High Torque Laundry Machine has a Normal service factor of 1.2.
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7.
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A Normal Torque Piston Pump has a Continuous service factor of 1.4.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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8.
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A body at rest tends to stay at rest and a body in motion tends to stay in
motion unless acted upon by another force. The is most commonly related to:
a. | Force | c. | Friction | b. | Vectors | d. | Inertia |
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9.
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The change in time a body moves over a given distance is known as
__________.
a. | friction | c. | acceleration | b. | velocity | d. | force |
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10.
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The type of speed describing an object rotating around an axis point.
a. | linear | c. | vertical | b. | horizontal | d. | angular |
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11.
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Which of the following are considered to be a simple machine?
a. | Wheel and axle | c. | Wedge | b. | Third class lever | d. | All of these |
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12.
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The product of force times distance divided by time is know as...
a. | Torque | c. | Horsepower | b. | Power | d. | Efficiency |
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13.
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__________ is used when selecting and sizing power transmission components or
determining the power requirements of the prime mover.
a. | Horsepower | c. | Overhung Load | b. | Efficiency | d. | None of these |
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14.
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The force imposed on a shaft at right angles or perpendicular to its axis,
outside of the bearing span.
a. | midichlorians | d. | the dark side | b. | magnetic | e. | overhung load | c. | rotational |
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Completion
Complete each
statement.
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15.
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Most mechanical industrial machines consist of a prime mover that ________ one
form of energy to another.
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16.
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___________ is the active agent behind any force and has a capacity to do
work.
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17.
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The electric motor converts electrical energy to __________ energy.
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18.
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Force is defined as a _______ or pulling action on a body.
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19.
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A _____ is a line that represents the magnitude and direction of force.
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20.
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The resistance to mechanical forces is call ________.
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21.
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_________ is defined as the product of the magnitude of an effort (force) by the
length of the effort arm.
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22.
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The traditional unit of power adopted in the United States for mechanical
engineering has been ___________.
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23.
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A ________ factor is a number applied to the load, power, or torque to reflect
the overall operating parameters and conditions the power transmission component will function
in.
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24.
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Run-out is a measure of ___________ or eccentricity.
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25.
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Altering the _________ arrangement can be an effective solution to extreme OHL
conditions.
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Matching
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a. | Inertia | f. | Friction | b. | Angular speed | g. | kinetic energy | c. | Force | h. | mechanical advantage | d. | Acceleration | i. | simple machine | e. | potential
energy | j. | Work |
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26.
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mass X acceleration
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27.
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(Final speed - Initial speed) / time
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28.
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(Angular distance)/time
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29.
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The property that at outside force be exerted on it to cause the object to
accelerate.
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30.
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Stored energy
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31.
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Energy in motion
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32.
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The resistance to any effort to slide or roll one body on another
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33.
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When a machine has the ability to increase or multiply the amount of force that
is input to output.
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34.
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force X distance
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35.
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A device that effects the work advantage
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