LESSON 2
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
B.
Original strength, contour, and minimum weight.
The three basic principles of repair are essential for a good
sound repair job. (Page 48)
2.
D.
6 to 8 rivet diameters.
6 to 8 rivet diameters will insure that you have a strong
repair. (Page 59)
3.
A.
Strength.
Without
maintaining
the
original
strength,
all
other
principles mean nothing. (Page 58)
4.
C.
Four.
Negligible, patching, insertion and replacement are the four
classifications of damage. (Page 53)
5.
A.
galvanic.
The more dissimilar the metals, the quicker and more severe
this type corrosion will be. (Page 55)
6.
A.
Exfoliation.
When you are able to see exfoliation corrosion, you must
repair or replace the part.
This type corrosion is beyond
simple treatment. (Page 55)
7.
D.
Torsion.
Torsion is a twisting which combines both compression and
tension. (Page 56)
8.
C.
shear.
Two sheets of metal will shear a rivet like a piece of metal
being cut with a foot shear. (Page 58)
93
AL0992
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