FRACTURES SET 03

FRACTURES SET 03

1. What region is first encountered by the material on a tensile test?
a) Elastic
b) Yielding
c) Strain hardening
d) Necking
 

Answer: a

2. What region is encountered after elastic deformation on a tensile test?
a) Strain hardening
b) Yielding
c) Necking
d) Fracture
 

Answer: b

3. Necking takes place after strain hardening.
a) True
b) False
 

Answer: a

4. Necking is a result of tri-axial tension.
a) True
b) False
 

Answer: b

5. What is cleavage plane for FCC materials?
a) {1 1 1}
b) {1 1 0}
c) {1 2 3}
d) {1 0 1}
 

Answer: a

6. What is the cleavage plane for HCP materials?
a) {1 2 3 0}
b) {1 0 0 0}
c) {0 0 0 1}
d) {1 0 0}
 

Answer: c

7. Which material fails by brittle fracture?
a) White cast iron
b) Steel
c) Aluminum
d) Copper
 

Answer: a

8. Which of the following materials don’t give brittle fracture?
a) White cast iron
b) Grey cast iron
c) Aluminum
d) Ceramics
 

Answer: c
9. When does brittle fracture is noticed?
a) On overloading
b) On sudden loading
c) Uniaxial loading
d) Compressing
 

Answer: b

10. What is characteristic of brittle fracture?
a) Prior warning
b) High speed
c) Necking
d) Ductile rupture
 

Answer: b