A bolt with a single raised dash on the head is classified as an

AN corrosion-resistant steel bolt.

Fretting corrosion is most likely to occur:

when two surfaces fit tightly together but can move relative to one another

Aircraft bolts should be installed with:

The head pointing up or forward

Why is it considered good practice to normalize a part after welding?

To relieve internal stresses developed within the base metal.

A close tolerance bolt is

Made with more stringent tolerances than ordinary bolts

Before applying any chemical surface treatment on bare metal, perform a water break test. This test will

Make certain that the metal is completely clean

mechanical force at room temperature such as, rolling, hammering, or bending, does what to metals

Cold worked, strain or work hardened

The reheating of a heat treated metal, such as with a welding torch:

Can significantly alter a metal's properties in the reheated area.

Where is an AN clevis bolt used on planes?

Only for shear load applications.

A fiber-type lock nut is held firmly on the threads of a bolt by pressure caused by:

An unthreaded fiber insert locked into a recess in the end of the nut

what is the best way to start cleaning an aircraft window

Flush the surface with clean water.

Which of the following describe the effects of annealing?

Softening of the metal., Decrease in internal stress.

Generally speaking, bolt grip length should be

equal to the thickness of the material which is fastened together.

The allowable variation of a quantity

what size is an AN470AD-4-4 rivet?

1/4 inch in length, 1/8 inch in diameter

Select a characteristic of a good gas weld.

The weld should taper off smoothly into the base metal.

non-approved commercial cleaning compounds may react to aircraft structures, This could cause?

Hydrogen embrittlement of the part

Almost all objects are composed of one or some combination of the

Triangle, circle, cube, cylinder, cone, and sphere

Fayed surfaces cause concern in chemical cleaning because of the danger of:

entrapping corrosive materials.

Damaged anodized coating can be repaired by:

Applying a chemical surface treatment

Which of the following are the desired effects of using Alodine on aluminum alloy?

A slightly rough surface., Increased corrosion resistance.

Which of the following are acceptable to use when utilizing chemical cleaning agents on aircraft?

Cotton fiber wiping cloths when using a flammable agent., Atomizing spray equipment

Engine parts made from magnesium and its alloys are cleaned by

proper commercial cleaner, decarborizer, and grit blasting hard deposits

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Block 2 Final review

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Answers

1
A bolt with a single raised dash on the head is classified as an
NAS close tolerance bolt.
AN corrosion-resistant steel bolt.
NAS standard aircraft bolt.
2
Corrosion should be removed from magnesium parts with a:
silicon carbide brush.
carborundum abrasive.
stiff, nonmetallic brush.
3
Fretting corrosion is most likely to occur:
only when two dissimilar metals are in contact.
when two surfaces fit loosely together and can move relative to another
when two surfaces fit tightly together but can move relative to one another
4
An assembly drawing shows how multiple detail parts form and assembly or sub assembly
False
True
5
What is correct for Air force/Navy bolt that is 0.875 inch wide, and 0.5625 long?
AN6-10
None
AN7-9
AN4-8
6
Station numbers are always referenced from
The phone book
The firewall
Datum
The leading edge of the wing
7
Sketches can be made easier using
doing it right
plain white paper.
graph paper.
artist's paper.
8
1,2,and 3, view drawings are a common form for what?
Orthographic projection
Schematic
Isometric
Obleque
9
Aircraft bolts should be installed with:
The head pointing up or forward
The head pointed.......yes
The head pointing down or forward
The head pointing up or rearward
10
Why is it considered good practice to normalize a part after welding?
To remove the surface scale formed during welding.
To relieve internal stresses developed within the base metal.
To increase the hardness of the weld.
11
In the four-digit aluminum index system number 2024, the first digit indicates
the major alloying element.
standard steel bolts.
the number of major alloying elements used in the metal.
the percent of alloying metal added.
12
When the specific torque value for nuts is not given, where can the recommended torque value be found?
AC 43.13-2A.
43-4b
AC 43.13-1B.
Technical Standard Order.
13
Which material section-line symbol indicates cast iron
1
2
3
14
A close tolerance bolt is
Made with less strignant tolerances than ordinary bolts
Made with more stringent tolerances than ordinary bolts
Just a fancy name for an ordinmary bolt
Takes up at least 75% of the slot... sorry i wasnt paying attention again
15
Before applying any chemical surface treatment on bare metal, perform a water break test. This test will
Ensure that water does not break the part
Make certain that the anodized coating has been fully removed
Make certain that the metal is completely clean
Make certain that the surface is fully covered with the anodized coat
16
Wiring diagrams indicate the size of wires?
True
False
17
What bolt is made of aluminum?
None of them
The one with a single dash
All of them
The one with the double dash
18
mechanical force at room temperature such as, rolling, hammering, or bending, does what to metals
Stress corrosion cracked
Artificially aged
Cold worked, strain or work hardened
Broken
19
A non-electrolotic chemical treatment of aluminum alloys to increase corrosion resistance & paint-bonding qualities is
alodizing.
dichromating
anodizing.
20
what is this rivet made of?
Monel Steel
Pure aluminum
5XXX series aluminum
2XXX series aluminum
21
The reheating of a heat treated metal, such as with a welding torch:
Cause it to catch fire
Has little or no effect on a metal's heat treated characteristics.
Has a cumulative enhancement effect on the original heat treatment.
Can significantly alter a metal's properties in the reheated area.
22
Where is an AN clevis bolt used on planes?
Where external tension loads are applied.
For tension and shear load conditions.
where the manual says, duh...
Only for shear load applications.
23
What kind of bolt is this?
Standard steel
Clevis
Magneticly inspected
Pure aluminum
24
what kind of bolt is this?
Corrosion resistant
Close tolerant
Standard steel
Pure aluminum
25
Select the solvent recommended for wipe-down of cleaned surfaces just before painting.
Dry-cleaning solvent.
Aromatic naphtha.
Aliphatic naphtha.
26
A fiber-type lock nut is held firmly on the threads of a bolt by pressure caused by:
An unthreaded fiber insert locked into a recess in the end of the nut
The force
Making threads in the fiber slightly smaller than the threads on the bolt
The insert held firmly in place at the base of the load
27
Almost all aircraft bolts are manufactured in the:
Class 4 fit
Class 2 fit
Class 1 fit
Class 3 fit
28
what is the best way to start cleaning an aircraft window
soft cloth moistened with de-mineralized or distilled water.
Flush the surface with clean water.
Gently wipe the surface with a clean, dry, soft cloth.
29
This bolt is designed to tolerate what kind of load?
Compression
Tension
Shear
Bending
30
Which of the following describe the effects of annealing?
Hard outside, soft inside
Softening of the metal.
Decrease in internal stress.
Improved corrosion resistance.
31
Generally speaking, bolt grip length should be
equal to the thickness of the material fastened together, plus 1/4 dia.
one and one-half times the thickness of the material
made of aluminum alloy
equal to the thickness of the material which is fastened together.
32
Tolerance is?
The nominal dimension of the part
make certain that an anodizing coating has been sufficiently removed
The allowable variation of a quantity
Only the most extreme dimensions of a part
33
What material symbol is frequently used in drawings to represent all metals?
Duranium
Aluminum.
Steel.
Cast iron.
34
Which material cannot be heat treated repeatedly without harmful effects?
Unclad aluminum alloy in sheet form.
6061-T9 stainless steel.
Clad aluminum alloy.
35
A drawing in which the subassemblies, or parts, are shown as being brought together on the aircraft is called?
a detail drawing.
an assembly drawing.
an installation drawing.
36
what size is an AN470AD-4-4 rivet?
1/4 inch in length
1/8 inch in diameter
1/8 inch in length
1/4 inch in diameter
37
Unless otherwise specified, given torque values for tightening aircraft nuts and bolts relate to?
both dry and lightly oiled threads.
clean, lightly oiled threads.
clean, dry threads.
Rivets
38
Select a characteristic of a good gas weld.
The depth of penetration shall be sufficient to ensure fusion of the filler
The height of the weld bead should be 1/8 inch above the base metal.
The weld should taper off smoothly into the base metal.
99 percent commercially pure aluminum.
39
non-approved commercial cleaning compounds may react to aircraft structures, This could cause?
Nitrogen embrittlement of the part
parts to react with the commercial compound....
An inability to properly clean the part
Hydrogen embrittlement of the part
40
If steel is heated to its critical temperature and allowed to cool slowly:
it will break
It will become soft
It will harden
It will corrode
41
In the corrosion process, it is the cathodic area or dissimilar cathodic material that corrodes.
False
True
42
Almost all objects are composed of one or some combination of the
Angle, arc, line, plane, square, and circle.
^^vv<><>ba "start'
Triangle, plane, arc, line, square, and polygon.
Triangle, circle, cube, cylinder, cone, and sphere
43
In Galvanic or Electro-Chemical Series for metals, the most anodic metals are ones that give up electrons easily
True
False
44
Aircraft bolts with a cross or asterisk marked on the bolt head are
close tolerance bolts.
standard steel bolts.
made of aluminum alloy.
45
Fayed surfaces cause concern in chemical cleaning because of the danger of:
forming passive oxides.
corrosion by imbedded iron oxide.
entrapping corrosive materials.
46
Damaged anodized coating can be repaired by:
Applying a chemical surface treatment
Using a mild cleaner
Applying a thin coat of primer
Reheatreating
47
Which of the following are the desired effects of using Alodine on aluminum alloy?
A slightly rough surface.
Relieved surface stresses.
A smooth painting surface.
Increased corrosion resistance.
48
Which of the following are acceptable to use when utilizing chemical cleaning agents on aircraft?
Cotton fiber wiping cloths when using a flammable agent.
Synthetic fiber wiping cloths when using a flammable agent.
spaceballs the flamethrower
Atomizing spray equipment
49
Engine parts made from magnesium and its alloys are cleaned by
Aluminized sand paper
Use a caustic solution to clean the hard deposits
Use MEK to wash and soak the parts
proper commercial cleaner, decarborizer, and grit blasting hard deposits
50
Castellated nuts that do not line up with the drilled hole, can have 10% additional torque applied
True
False
51
what kind of bolt is this?
Close tolerance
Corrosion resistant
Clevis
Standard steel
52
In what type of electrical diagram are images of components used instead of conventional electrical symbols?
A block diagram.
A pictorial diagram.
A sketch
A schematic diagram.
53
Alclad is a metal consisting of:
aluminum alloy surface layers and a pure aluminum core.
Multiple layers of sheet aluminum alloy
a homogeneous mixture of pure aluminum and aluminum alloy
pure aluminum surface layers on an aluminum alloy core.
54
what head style is this rivet
470
Counter sunk
426
Universial
55
which image is correct
3
2
1
56
What is the part number for an Air force/Navy bolt that is half an inch wide, and long?
None
AN6-10
AN8-4
AN8-12
57
What may be used to remove corrosion from highly stressed steel surfaces?
Fine-grit aluminum oxide.
Steel wire brushes.
Medium-grit carborundum paper.
58
What is descriptive of the annealing process for steel, during and after it has been annealed?
Slow cooling; low strength.
Slow cooling; increased resistance to wear.
Rapid cooling; high strength.
59
what kind of bolt is this?
Corrosion resistant
Clevis
Pure aluminum
Magneticly inspected
60
When reading a blueprint, a dimension is given as 5.327 inches +.007 -.003. Which statement is true?
The minimum acceptable size is 5.390 inches.
potato
The maximum acceptable size is 5.334 inches
The minimum acceptable size is 5.324 inches.
61
Normalizing is a process of heat treating ferrous based metals only
True
False
62
What style of wrench should be used unless a situation prevents its proper use?
plieres
adjustable, or cresent wrench
Open ended wrench
Box, or closed end wrench
63
Select the solvent used to clean acrylics and rubber
Aliphatic naphtha.
Methyl ethyl ketone.
Aromatic naphtha
64
Identify the bottom view of the object shown.
3
1
2
65
identify the (badly drawn) exstension line
3
1
4
2
66
An assembly drawing has enough detail to allow a part to be manufactured
False
True
67
What are case hardening techniques?
Tempering.
Normalizing.
Nitriding
Carburizing
68
If bolt pin hole and castellated nut do not align within the recommended torque range, the acceptable practice is to?
change washers and try again.
what?
exceed the recommended torque range by no more than 10 percen
tighten below the torque range.
69
The drawings often used in illustrated parts manuals are what?
detail drawings.
block drawings.
exploded view drawings.
70
what is the indication that a part has cooled to quickly after being welded?
Cracks adjacent to the weld
Discoloration
Gas pockets
Porosity
71
Caustic cleaning products used on aluminum structures have the effect of producing:
passive oxidation.
improved corrosion resistance.
corrosion.
72
unless stated, given torque is always dry torque
False
True
73
Self locking nuts should NOT be used?
EVER!!
They should always be used
When the part is exposed to rotoation
when the part may vibrate
74
What corrosion may attack the grain of aluminum alloys when heat treatment process has been improperly accomplished?
Rust
Concentration cell.
Intergranular.
Fretting.
75
Orthographic projection can show as many as 6 views
False
True
76
'4130' designating chromium molybdenum steel, the first digit indicates the:
4 thousandths of an inch thick
percentage of the basic element in the alloy.
percentage of carbon in the alloy in hundredths of a percent
basic alloying element.
77
lifting or flaking of the metal at the surface due to the delamination of grain boundarie
brinelling.
exfoliation
granulation
78
Galvanic corrosion is likely to be most rapid and severe when:
surface area of cathodic metal is smaller than surface area of the anodic
surface areas of the anodic and cathodic metals are approximately the same.
surface area of the anodic metal is smaller than the surface area of the ca
79
what is this rivet made of?
D
A
DD
AD
80
The aluminum code number 1100 identifies what type of aluminum?
99 percent commercially pure aluminum.
Aluminum alloy containing zinc.
Aluminum alloy containing 11 percent copper.
AC 43.13-1B
81
what is this rivet made of?
2017 aluminum
pure aluminum
2117 aluminum
2024 aluminum
82
Hidden lines are described how?
Medium solid line.
Alternate short and long light dashes.
Dashed line, of medium weight
Lines... that hide?
83
A detail drawing has enough information to allow a part to be manufactured
True
False
84
Why is steel tempered after being hardened?
increase its strength
increase ductility
to soften
to reduce brittleness
85
The grip length of a bolt should be equal to?
Rapped cooling of the weld.. wait, what was the question?
The thickness of the pices being held by the bolt X 1.5 the diameter
twice the thickness of the metal
The thickness of the pices being held by the bolt
86
Which of the following are acceptable to use in cleaning anodized surfaces?
Aluminum wool.
Stainless steel wire brush.
Fiber bristle brush.
Steel wool.
87
A hydraulic system schematic drawing typically indicates the:
specific location of the individual components within the aircraft.
direction of fluid flow through the system.
amount of pressure in the pressure and return lines, and components
88
what do you use to clean a file?
A wire wheel
A file brush
A pressure washer
A file card
89
what is this rivet made of?
pure aluminum
2117 aluminum
2024 aluminum
2017 aluminum
90
Which of the listed conditions is NOT a requirement for corrosion to occur?
Electrical contact between an anodic area and a cathodic area.
The presence of a passive oxide film.
The presence of an electrolyte.
91
What is generally used in the construction of aircraft engine firewalls?
Titanium.
Chrome-molybdenum alloy steel.
Stainless steel.
Aramid
92
what is this rivet made of?
AD
D
DD
A
93
torque values can be found?
FAR 43 appendex D
in the manual
AC 43.13-1B
AC 43-4B
94
Spilled mercury on aluminum causes rapid and severe corrosion that is very difficult to control.
False
True
95
what head style are these rivet
470
Counter sunk
426
Universial
96
what is this rivet made of?
DD
D
A
AD
97
What is the max diameter of the hole for the clevis pin?
19/64"
20/32"
1/8"
20/64"
98
The datum is always the firewall
False
True
99
what is this rivet made of?
Monel Steel
5XXX series aluminum
Pure aluminum
2XXX series aluminum
100
The corrosion that occurs with most metals is the result of:
a tendency for them to return to their natural state.
blocking electron flow in homogenous metals, or between dissimilar metals
electron flow in or between metals from cathodic to anodic areas.

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