Materials

Question 1

Metals may be classified as…

Answer 1

Ferrous or non-ferrous

Question 2

Type of metal that has iron as its main constituent

Answer 2

Ferrous metal

Question 3

Type of metal that has a metal other than iron as its main constituent

Answer 3

Non-ferrous metal

Question 4

Ability of a material to resist the externally applied forces without breaking or yielding

Answer 4

Strength

Question 5

Ability of a material to resist deformation under stress

Answer 5

Stiffness

Question 6

Measures stiffness

Answer 6

Modulus of elasticity

Question 7

Property of a material to regain its original shape after deformation when external forces are removed

Answer 7

Elasticity

Question 8

Property of a material which retains the deformation produced under load permanently

Answer 8

Plasticity

Question 9

Property of a material enabling it to be drawn into wire with the application of a tensile force

Answer 9

Ductility

Question 10

Property of breaking a material with little permanent distortion. Opposite of ductility.

Answer 10

Brittleness

Question 11

Special case of ductility which permits materials to be rolled or hammered into thin sheets

Answer 11

Malleability

Question 12

Property of materials to resist high impact loads like hammer blows. Decreases when a material is heated.

Answer 12

Toughness

Question 13

Property of a material to absorb energy to resist shock and impact loads

Answer 13

Resilience

Question 14

Slow and permanent deformation experienced by a material subjected to a constant stress at high temperature for a long period of time

Answer 14

Creep

Question 15

When a material is subjected to repeated stresses, it fails at stresses below its yield point stress

Answer 15

Fatigue

Question 16

Ability of a material to be cut or impressed by another material

Answer 16

Hardness