FRACTURES SET 07

FRACTURES SET 07

1. What is the deformation per unit length?

a) Strain
b) Stress
c) Toughness
d) Resilience

Answer: a

2. Ductility is indicated by _________
a) Percentage elongation
b) Percentage reduction
c) Poisson’s ratio
d) Elasticity

Answer: a

3. If a bar is doubled in length, what will be the strain induced?
a) 0.5
b) 1.0
c) 1.5
d) 2.0

Answer: b

4. Ductility is the opposite concept of _________
a) Toughness
b) Plasticity
c) Brittleness
d) Resilience

Answer: c

5. What term is used for the ratio of lateral strain to linear strain?
a) Bulk modulus
b) Elastic modulus
c) Shear strain
d) Poisson’s ratio

Answer: d

6. Material, if show identical properties in all directions, is said to be _________
a) Isotropic
b) Elastic
c) Ideal
d) Homogeneous

Answer: a

7. Which material has higher elasticity?
a) Rubber
b) Glass
c) Steel
d) Copper

Answer: c

8. _________ does not show linear stress strain relationship.
a) Rubber
b) Ceramic
c) Steel
d) Copper

Answer: a

9. The maximum stress up to which stress is proportional to strain is known as ________
a) Tensile stress
b) Compressive stress
c) Modulus of elasticity
d) Proportional limit

Answer: d

10. Yield strength represents resistance against _________
a) Fracture
b) Elastic deformation
c) Bending
d) Plastic deformation

Answer: d

11. Strain hardening causes more deformation on less stress application.
a) True
b) False

Answer: b

12. Necking causes drop in load after an ultimate tensile point.
a) True
b) False

Answer: a