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Grade 10 Chapter 9

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which of the following is not a type of thread used on nuts and bolts?
a.
Coarse.
c.
Medium.
b.
Metric.
d.
Fine.
 

 2. 

A soft, flexible material that is placed between parts to prevent leakage is called a(n) ____.
a.
gasket
c.
barrier
b.
frisket
d.
All of the above.
 

True/False
Indicate whether the statement is true or false.
 

 3. 

Sealer must always be used when installing a gasket.
 

 4. 

A seal is used to prevent leakage between a stationary part and a moving part.
 

 5. 

The only way to remove a broken bolt is to “drill it out.”
 

 6. 

When tapping aluminum to accept a fastener, use a fine thread for better holding power.
 

 7. 

In automotive work, bolts and nuts are often named after the parts they hold.
 

 8. 

A key fits into a slot cut in a shaft and a mating part, and keeps the part from turning on the shaft.
 

 9. 

When installing a gasket, all fasteners should be hand-tightened before a wrench is applied.
 

 10. 

An O-ring seal should never be exposed to oil or other engine fluids.
 

Matching
 
 
Match the following terms and identifying phrases.
a.
lock washer
d.
RTV
b.
nut
e.
cotter pin
c.
tap
f.
cap screw
 

 11. 

Fastener with internal threads.
 

 12. 

Bolt that is threaded into a part other than a nut.
 

 13. 

Safety device used with slotted nut.
 

 14. 

Gasket-forming material used on flexible flanges.
 

 15. 

Tool for cutting threads in a hole.
 

 16. 

Device used to prevent loosening of fastener because of vibration.
 

Completion
Complete each statement.
 

 17. 

If a bolt is overtightened, the ______________________________ could fail.
 

 

 18. 

To lock a part onto a(n) ______________________________, a set screw is often used.
 

 

 19. 

Bolts that have left-hand threads are ______________________________ by turning them counterclockwise.
 

 

 20. 

Thread ______________________________ is the same as thread coarseness.
 

 

 21. 

Bolts broken off flush with the surface can often be removed by using a screw ______________________________.
 

 

 22. 

Snap rings are classified as ______________________________ fasteners.
 

 

 23. 

A(n) ______________________________ on a shaft could cut a new seal during installation, causing it to leak.
 

 

Short Answer
 

 24. 

List two methods of repairing major thread damage.
 

 25. 

Describe what will happen if a seal is installed backward on a shaft.
 



 
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