Navy AM MOD 3 Actual Exam Questions and Answers Latest Update

EXAM COVERAGE SUMMARY
Material Properties & Characteristics
 Mechanical properties: hardness, brittleness, malleability, ductility, elasticity, toughness,
density, fusibility, conductivity, contraction, expansion
 Strength properties: tensile, compression, shear, torsial, strength-to-weight ratio
 Corrosion resistance and material selection factors
Ferrous & Nonferrous Metals
 Ferrous metals: iron as principal element, SAE numbering system
 Nonferrous metals: aluminum, titanium, magnesium alloys
 Advantages, disadvantages, and applications of each
 Clad coating and protective treatments
Aircraft Drawings & Blueprint Reading
 Line types: visible, hidden, center, dimension, extension, leader, phantom, break, cutting
plane
 Drawing types: orthographic, auxiliary, sectional, phantom, exploded, schematic
 Station diagrams, alignment diagrams, flat pattern layouts
 Measurement systems and tolerances
Sheet Metal Layout & Fabrication
 Bend terminology: BA, BM, F, MP, ML, BTL, SB, NA, BR
 Layout tools: combination square, scribe, dividers, punches, compass
 Cutting tools: snips, hacksaw, files, shears, saws
 Forming equipment: stakes, brakes, slip roll, rotary machine
 Stress relieving and edge finishing
Drilling & Fasteners
 Drill bits: types, sizing systems (fractional, letter, number)
 Drill presses and hand drilling techniques
 Edge distance requirements and countersinking methods
 Cleco fasteners and temporary securing
Rivets & Riveting
 Solid shank rivets: types, head markings, measurement

,  Rivet selection criteria and installation procedures
 Rivet guns: types, operation, and applications
 Bucking bars and rivet sets
 Rivet removal procedures
 Blind rivets: mechanical lock, friction lock
 Special fasteners: Hi-Shear, Jo-Bolt, Hi-Lok
Aircraft Structures
 Fuselage: types, components, reinforcements
 Wings: construction, components
 Rotary wings: construction and components
 Tail group and empennage
 Station reference systems
Aircraft Repairs
 Damage classification and assessment
 Scratch, crack, and dent repair methods
 Patching and insertion techniques
 Sealing repairs and corrosion prevention
 Technical publications and references


SECTION 1: MATERIAL PROPERTIES (Questions 1-25)

1. What property describes a material's ability to resist abrasion, penetration, and distortion?
A) Toughness
B) Hardness
C) Malleability
D) Elasticity

Answer: B
Hardness is specifically defined as the ability to resist abrasions, penetrations, and distortion, making
it the correct choice for this material property.




2. Which property allows very little bending or shaping without shattering?
A) Ductility
B) Malleability

,C) Brittleness
D) Elasticity

Answer: C
Brittleness is characterized by materials that break or shatter when subjected to bending or shaping
forces, with very little deformation before failure.




3. What is the ability to be bent, flattened, or hammered without breaking called?
A) Ductility
B) Malleability
C) Toughness
D) Conductivity

Answer: B
Malleability specifically refers to the ability of a material to be bent, flattened, or hammered into
shapes without breaking or cracking.




4. Which property describes the ability to be bent permanently or twisted into various shapes
without breaking?
A) Malleability
B) Elasticity
C) Ductility
D) Hardness

Answer: C
Ductility is the ability of a material to undergo permanent deformation through bending or twisting
without fracturing.




5. What is the ability to return to its original shape called?
A) Elasticity
B) Plasticity
C) Toughness
D) Resilience

, Answer: A
Elasticity is the property that allows a material to return to its original shape after the removal of a
deforming force.




6. Which property describes the ability to withstand tearing or shearing forces?
A) Tensile strength
B) Toughness
C) Hardness
D) Compression strength

Answer: B
Toughness is the ability of a material to resist tearing or shearing, indicating its capacity to absorb
energy before failure.




7. What is the actual weight of material per cubic inch called?
A) Mass
B) Weight
C) Density
D) Specific gravity

Answer: C
Density is defined as the actual weight of a material per cubic inch, a critical property in aerospace
applications.




8. Which property refers to the ability to become a liquid when heated?
A) Conductivity
B) Fusibility
C) Fluidity
D) Viscosity

Answer: B
Fusibility is the ability of a material to become liquid when heated, essential for casting and welding
operations.