FINAL EXAM METALLURGY QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+
When a design engineer defines requirements, these requirements are:
A. Mechanical properties
B. Manufacturing requirements
C. Geometric requirements
D. All of these are design requirements Ans✓✓✓All of these are design
requirements
Met 2110 focuses on which step in the manufacturing sequence?
A.Material Selection
B. Process selection
C. Manufacture or fabrication
D. Evaluation Ans✓✓✓Material Selection
Materials in this family often exhibit good strength and good ductility.
They are also good electrical and thermal conductors.
A. Metals
B. Ceramics
C. Polymers Ans✓✓✓Metals
,Materials in this family are hard or strong, offer good electrical and
thermal insulation, and can be attractive for elevated temperature
applications. Unfortunately, they are generally brittle.
A. Metals
B. Ceramics
C. Polymers Ans✓✓✓Ceramics
In this type of bonding, the bonds are "directional" (wanting a set and
limited number of nearest neighbors). The resulting materials have
relatively low density.
A. Metallic
B. Ionic
C. Covalent
D. Vander Waals Ans✓✓✓Covalent
Because the electrons in this type of bonding are not captive to either
atoms or locations, but are free to wander throughout the structure,
electrical and thermal conductivities are good, and the materials are
often ductile.
A. Metallic
B. Ionic
C. Covalent
D. Vander Waals Ans✓✓✓Metallic
,All of the bonding electrons are tied up within molecules in this type of
bonding. If the charge is not distributed uniformly within the molecules,
a weak electrostatic attraction can occur between the polarized
molecules. Its effects are often significant in polymeric materials.
A. Metallic
B. Ionic
C. Covalent
D. Vander Waals Ans✓✓✓Vander Waals
In a crystalline lattice, the distance between adjacent lattice points (in a
specified direction) is the:
A. Miller index
B. Lattice parameter
C. Packing factor
D. Coordination Number Ans✓✓✓Lattice parameter
Metallic-bonded materials prefer crystal structures with dense packing
and a large number of nearest neighbors. The LEAST attractive structure
is ___ since it has only ___ neighbors.
A. SC -- 6
B. BCC -- 8
C. SC -- 8
D. BCC -- 6 Ans✓✓✓SC -- 6
, In the face-centered cubic (FCC) crystal structure, atoms touch along
the:
A. Cube edges
B. Body diagonals
C. Face diagonals Ans✓✓✓Face diagonals
The coordination number for a structure that contains close-packed
planes is:
A. 6
B. 8
C. 12
D. 14 Ans✓✓✓12
The crystal structure that contains close-packed planes stacked in the
ABABAB sequence is:
A. SC
B. BCC
C. FCC
D. HCP Ans✓✓✓HCP
Compared to materials with other structures, materials with the BCC
structure tend to:
A. Have greater strength
B. Have greater ductility
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+
When a design engineer defines requirements, these requirements are:
A. Mechanical properties
B. Manufacturing requirements
C. Geometric requirements
D. All of these are design requirements Ans✓✓✓All of these are design
requirements
Met 2110 focuses on which step in the manufacturing sequence?
A.Material Selection
B. Process selection
C. Manufacture or fabrication
D. Evaluation Ans✓✓✓Material Selection
Materials in this family often exhibit good strength and good ductility.
They are also good electrical and thermal conductors.
A. Metals
B. Ceramics
C. Polymers Ans✓✓✓Metals
,Materials in this family are hard or strong, offer good electrical and
thermal insulation, and can be attractive for elevated temperature
applications. Unfortunately, they are generally brittle.
A. Metals
B. Ceramics
C. Polymers Ans✓✓✓Ceramics
In this type of bonding, the bonds are "directional" (wanting a set and
limited number of nearest neighbors). The resulting materials have
relatively low density.
A. Metallic
B. Ionic
C. Covalent
D. Vander Waals Ans✓✓✓Covalent
Because the electrons in this type of bonding are not captive to either
atoms or locations, but are free to wander throughout the structure,
electrical and thermal conductivities are good, and the materials are
often ductile.
A. Metallic
B. Ionic
C. Covalent
D. Vander Waals Ans✓✓✓Metallic
,All of the bonding electrons are tied up within molecules in this type of
bonding. If the charge is not distributed uniformly within the molecules,
a weak electrostatic attraction can occur between the polarized
molecules. Its effects are often significant in polymeric materials.
A. Metallic
B. Ionic
C. Covalent
D. Vander Waals Ans✓✓✓Vander Waals
In a crystalline lattice, the distance between adjacent lattice points (in a
specified direction) is the:
A. Miller index
B. Lattice parameter
C. Packing factor
D. Coordination Number Ans✓✓✓Lattice parameter
Metallic-bonded materials prefer crystal structures with dense packing
and a large number of nearest neighbors. The LEAST attractive structure
is ___ since it has only ___ neighbors.
A. SC -- 6
B. BCC -- 8
C. SC -- 8
D. BCC -- 6 Ans✓✓✓SC -- 6
, In the face-centered cubic (FCC) crystal structure, atoms touch along
the:
A. Cube edges
B. Body diagonals
C. Face diagonals Ans✓✓✓Face diagonals
The coordination number for a structure that contains close-packed
planes is:
A. 6
B. 8
C. 12
D. 14 Ans✓✓✓12
The crystal structure that contains close-packed planes stacked in the
ABABAB sequence is:
A. SC
B. BCC
C. FCC
D. HCP Ans✓✓✓HCP
Compared to materials with other structures, materials with the BCC
structure tend to:
A. Have greater strength
B. Have greater ductility
