Plastic Deformation And Phase Transformations(Engineering > Engineering Materials ) Questions and answers for exam Preparation

Question 1. Pure metals generally solidify at _________ temperature.

Boiling
Freezing
Room
Cryogenic

Explanation:-

Answer: Option B. -> Freezing
Answer: (b).Freezing

Question 2. Which of the following holds true for pure metals?

Low ductility
High tensile strength
High yield point
Corrosion resistance

Explanation:-

Answer: Option D. -> Corrosion resistance
Answer: (d).Corrosion resistance

Question 3. In the homogeneous nucleation, nucleation rate is maximum __________

At freezing point
Above boiling point
Below melting point
At room temperature

Explanation:-

Answer: Option C. -> Below melting point
Answer: (c).Below melting point

Question 4. In nucleation, particles having radius less than rc are known as _______

Nuclei
Embryo
Element
Atom

Explanation:-

Answer: Option B. -> Embryo
Answer: (b).Embryo

Question 5. The beginning of a new phase transformation is known as ________

Nucleation
Growth
Segregation
Coring

Explanation:-

Answer: Option A. -> Nucleation
Answer: (a).Nucleation

Question 6. During grain growth, the number of grains _________ in number.

Increase exponentially
Increase constantly
Decrease
Do not change

Explanation:-

Answer: Option C. -> Decrease
Answer: (c).Decrease

Question 7. Relaxation modulus is defined as __________

a
b
c
d

Explanation:-

Answer: Option A. -> a
Answer: (a).a

Question 8. Which of the following represents the slip mode of plastic deformation?

a
b
c
d

Explanation:-

Answer: Option B. -> b
Answer: (b).b

Question 9. The stress-strain relationship for viscous components is given by ________

a
b
c
d

Explanation:-

Answer: Option C. -> c
Answer: (c).c

Question 10. Which rolling mill does the following figure illustrate?

Three-high
Four-high
Cluster
Tandem

Explanation:-

Answer: Option D. -> Tandem
Answer: (d).Tandem