True/False
Indicate whether the
statement is true or false.
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1.
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Bearings, gears, drive chains, and many other types of mechanical systems
require lubrication to functioin properly.
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2.
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The main function of a lubricant is to form a fluid film.
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3.
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Friction is the resistance to rolling or sliding movement of one object on
another.
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4.
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A 30-weight oil is thicker than a 10-weight oil.
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5.
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Calcium soap greases absorb water, which decreases their effectiveness and are
washed away under heavy volumes of water.
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6.
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Soap is considered a grease.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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7.
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Which of the following are hydrocarbon petroleum fluids?
a. | Animal and Vegetable Oils | c. | Synthetic Oil | b. | Mineral
Oils | d. | Grease |
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8.
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One of the most widespread greases used in industry.
a. | Calcium Soap | c. | Lithium Soap | b. | Sodium Soap | d. | Complex Soap |
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9.
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Can withstand higher temperatures than conventional greases.
a. | Calcium Soap | c. | Lithium Soap | b. | Sodium Soap | d. | Complex Soap |
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10.
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Can be used over a wider temperature range than normal calcium greases.
a. | Calcium Soap | c. | Lithium Soap | b. | Sodium Soap | d. | Complex Soap |
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11.
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Which of the following uses gravity to deliver a lubricant?
a. | Automatic Grease lubricators | c. | Wick System | b. | Drip
System | d. | Manual
System |
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Completion
Complete each
statement.
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12.
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Lubricating is the process of applying ___________.
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13.
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What can damage machine components if it becomes excessive?
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14.
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What are applied to mating surfaces to reduce friction?
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15.
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___________ is the measure of a fluids resistance to flow.
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16.
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A ______ _______ of lubrican separates the peaks of both surfaces
and friction is much less than in a boundary film condition.
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17.
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Graphite is an example of a ______ _______ lubricant.
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18.
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A drip system is a type of lubricant __________ system.
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19.
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_____________ that filter are made from everything from paper to
porcelain.
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20.
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Exposure to _____________ and synthetic lubricants should be kept to a minimum
to prevent possible health problems.
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Matching
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a. | Flash Point | e. | Synthetics | b. | Viscosity Index | f. | Viscosity | c. | Demulsability | g. | Lubricant Film | d. | Consistency | h. | Pour Point |
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21.
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The measure of a fluid’s (oil’s) resistance to flow.
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22.
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The measure of a lubricant’s change in viscosity because of
temperature.
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23.
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the minimum temperature at which sufficient vapors are produced to combine with
air to produce a flash when a flame is applied.
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24.
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The lowest point at which oil will flow in a controlled lab test.
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25.
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The ability of oil to separate from water
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26.
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Lubricants that are synthesizes from pure carbon and hydrogen light gases that
are recovered and distilled during the refinement process.
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27.
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The degree to which grease resists deformation under the application of
force.
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28.
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Is needed to separate the metal mating surfaces of machine parts
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