FRACTURES SET 01

FRACTURES SET 01

1. In _____________ fracture, the crack grows at a slow pace and a lot of plastic deformation occurs.
a) Ductile
b) Brittle
c) Fatigue
d) De-cohesive
 

Answer: a

2. ___________ amount of energy strain is required for ductile fracture.
a) Higher
b) Lower
c) Intermediate
d) Can’t say
 

Answer: a

3. What term is referred to the failure of highly ductile materials?
a) Ductile rupture
b) Orange peel
c) Patenting
d) Buckling
 

Answer: a

4. What appearance does ductile fracture under microscope give?
a) Irregular and rough
b) Smooth
c) Plate like
d) Shiny
 

Answer: a

5. Ductile fracture generally occurs in ____________
a) Metals
b) Ceramics
c) Plastics
d) Composites
 

Answer: a

6. In what matter ductile fracture occurs?
a) Trans granular
b) Intra granular
c) Catastrophically
d) Shear fracture
 

Answer: a

7. The planes along with which fracture takes place in metals are known as ____________
a) Slip plane
b) Cleavage plane
c) Twin plane
d) Basal plane
 

Answer: b

8. What is cleavage plane for BCC structure?
a) {1 0 0}
b) {1 1 1}
c) {0 0 0 1}
d) {1 1 0}
 

Answer: a
9. ___ metals and their alloys may fail by shear or cleavage.
a) FCC
b) HCP
c) BCC
d) SC
 

Answer: c

10. Cup and cone type fracture is a ____________ fracture.
a) Brittle
b) Ductile
c) Fatigue
d) De-cohesive
 

Answer: b