ME 334 Materials Engineering Final Exam 2025/2026 – Complete Study Guide, Practice Questions

ME 334 Materials Engineering Final Exam

A cylindrical specimen of brass that has a radius of 15 mm, a tensile modulus of 110 GPa, and a
Poisson's ratio of 0.35 Is pulled in tension with force of 32,000 N. If the deformation is totally
elastic, what is the strain experienced by the specimen? –

A. 0.000412

B. None of the answers CORRECT

C. 0.412

D. 0.000205



The ionic character of CaCl2 is: -

A. 29%

B. 100%

C. 0%

D. 69% CORRECT



The Poisson's ratio is defined as the ratio of the axial strain and the lateral strain –

A. True

B. False CORRECT



The capacity of a material to absorb energy when it is elastically deformed –

A. Yield strength

B. proportional limit

C. Resilience CORRECT

D. Modulus of elasticity



A metal that experiences very little or no plastic deformation upon fracture is termed: -

A. Brittle CORRECT

B. Tough

,ME 334 Materials Engineering Final Exam

C. Ductile



A sample of Hf from an ore is determined to contain 63%^178Hf with an atomic weight of
177.994 amu, 24%^179Hf with an atomic weight of 178.946 amu, and 13% of an unknown Hf
isotope. If the average atomic weight of the sample is 178.086 amu, the atomic weight of the
unknown isotope is: -

A. 177.013 amu

B. None of the answers

C. 178.254 amu

D. 176.944 amu CORRECT



The number of atomic or ionic nearest neighbors: -

A. atomic packing factoer

B. Linear density

C. Planar density

D. Coordination number CORRECT



FCC and HCP are two crystal structures generated by stacking close-packed planes on top of one
another. The difference between the two structures lies in: -

A. The presence of a deformation along one axis in the HCP structure

B. The stacking sequence of close-packed planes CORRECT

C. none of the answers

D. The formation of defects in HCP upon stacking close-packed planes



A steel rod is pulled in tension with a stress that is less than the yield strength. The modulus of
elasticity may be calculated as: -

A. Axial load divided by change in length

,ME 334 Materials Engineering Final Exam

B. Axial stress divided by change in length

C. Axial stress times axial strain

D. Axial stress divided by axial strain CORRECT



A stell bar 100 mm (4.0 in.) long and having a square cross section 20 mm (0.8 in.) on an edge is
pulled in tension with a load of 89,000 N (20,000 lbf), and experiences an elongation of 0.10
mm (4.0*10^-3 in.). Assuming that the deformation is entirely elastic, calculate the elastic
modulus of the steel. –

A. none of the answers

B. 63 GPa

C. 223 GPa

D. 112 GPa

E. 223 GPa CORRECT



The atomic packing factor of the HCP structure is the same of: -

A. atomic packing factor of the SC structure

B. The atomic packing factor of the FCC structure CORRECT

C. None of the answers

D. atomic packing factor of the BCC structure



Identify the direction in this cubic structure: (https://i.imgur.com/YxOqHJz.jpg) –

A. [212]

B. (121)

C. [111]

D. [121] CORRECT

E. none of the answers

, ME 334 Materials Engineering Final Exam

Identify the plane in this cubic structure: (https://i.imgur.com/GpP8AUB.jpg) –

A. (210)

B. [120]

C. (120) CORRECT

D. (110)



Identify the direction in this HCP structure: (https://imgur.com/mg27aws.jpg) –

A. [110]

B. [120]

C. none of the answers

D. [210] CORRECT



Identify the plane in this HCP structure: (https://i.imgur.com/C3bK9Rv.jpeg) - A. (1120)

B. (100) CORRECT

C. (1110)

D. (110)



Bragg's law is a necessary and sufficient condition for diffraction by real crystals - A. True

B. False CORRECT



Primary interatomic bonding: - A. van der waals

B. ionic CORRECT

C. Metallic CORRECT

D. Hydrogen bonding

E. Covalent CORRECT