3A1 chapter 13 questions with complete
solutions graded A+
The term "plasticity" is applied to material which:
a. Is brittle in its composition
b. Is not capable of being reshaped
c. Will return to its original shape after being deformed
d. Will return to its original shape after the yield point is reached
e. Will not return to its original shape after being deformed. - correct answer ✔✔e
Elasticity is the property a body possesses that allows the body to:
a. Return to its original shape after being deformed
b. Withstand great deformation under high loads before
rupturing
c. Be rolled into the desired shape without breaking
d. Be rolled into the desired shape without breaking
e. Be rolled into the desired shape without breaking. - correct answer ✔✔a
Malleability property of material is that property which allows the material to be:
a. Be twisted a very large amount before breaking
b. Be rolled to a desired shape without breaking
c. Resist change in shape under an applied load
d. Be heated to liquid state and poured into a mould
e. Be lengthen without breaking. - correct answer ✔✔b
The mechanical property that determines whether a material will break or stand up under a sudden
impact or hard blow is:
a. Malleability
,b. Plasticity
c. Ductility
d. Brittleness
e. Toughness. - correct answer ✔✔e
A material's ability to resist a change in shape or size when a load is applied is known as:
a. Elastic
b. Stiffness
c. Plasticity
d. Ductility
e. Tough. - correct answer ✔✔b
A Brinell hardness number of "65 HB 10/500/25" means:
a. That the material tested can handle a load of 65 kN applied across the entire length of the material
without failure
b. That a load of 65 kg was applied for 10 seconds to a 500 mm length of material and it showed at
deformation of 25 N
c. That a Brinell hardness of 65 was obtained using a 10 mm in diameter hardened steel ball with a 500
kg load applied for a period of 25 seconds
d. That a Brinell hardness number of 65 was obtained when a 500 kg load was applied for 10 seconds to
a 25 mm in diameter hardened steel ball
e. This number is used as a reference to find the hardness of the material on a Brinell Hardness Chart. -
correct answer ✔✔c
Hardness property of material is a body's ability to:
a. Absorb impact
b. Resist penetration
c. Resist bending
d. Absorb heat
e. Resist breaking. - correct answer ✔✔b
, Materials which break rather than bend even though great force is required to break them are said to
be:
a. Hard
b. Brittle
c. Malleable
d. Tough
e. Ductile. - correct answer ✔✔b
A material is said to possess _____ if it is very soft and easily deformed.
a. Plasticity
b. Hardness
c. Ductility
d. Brittleness
e. Elasticity. - correct answer ✔✔a
If a material does not have the property of ductility then it will be:
a. Tough
b. Hard
c. Malleable
d. Brittle
e. Plastic. - correct answer ✔✔d
_____ refers to that property of a material which enables it to resist wear, abrasion and penetration.
a. Brittleness
b. Stiffness
c. Hardness
d. Toughness
e. Elasticity. - correct answer ✔✔c
solutions graded A+
The term "plasticity" is applied to material which:
a. Is brittle in its composition
b. Is not capable of being reshaped
c. Will return to its original shape after being deformed
d. Will return to its original shape after the yield point is reached
e. Will not return to its original shape after being deformed. - correct answer ✔✔e
Elasticity is the property a body possesses that allows the body to:
a. Return to its original shape after being deformed
b. Withstand great deformation under high loads before
rupturing
c. Be rolled into the desired shape without breaking
d. Be rolled into the desired shape without breaking
e. Be rolled into the desired shape without breaking. - correct answer ✔✔a
Malleability property of material is that property which allows the material to be:
a. Be twisted a very large amount before breaking
b. Be rolled to a desired shape without breaking
c. Resist change in shape under an applied load
d. Be heated to liquid state and poured into a mould
e. Be lengthen without breaking. - correct answer ✔✔b
The mechanical property that determines whether a material will break or stand up under a sudden
impact or hard blow is:
a. Malleability
,b. Plasticity
c. Ductility
d. Brittleness
e. Toughness. - correct answer ✔✔e
A material's ability to resist a change in shape or size when a load is applied is known as:
a. Elastic
b. Stiffness
c. Plasticity
d. Ductility
e. Tough. - correct answer ✔✔b
A Brinell hardness number of "65 HB 10/500/25" means:
a. That the material tested can handle a load of 65 kN applied across the entire length of the material
without failure
b. That a load of 65 kg was applied for 10 seconds to a 500 mm length of material and it showed at
deformation of 25 N
c. That a Brinell hardness of 65 was obtained using a 10 mm in diameter hardened steel ball with a 500
kg load applied for a period of 25 seconds
d. That a Brinell hardness number of 65 was obtained when a 500 kg load was applied for 10 seconds to
a 25 mm in diameter hardened steel ball
e. This number is used as a reference to find the hardness of the material on a Brinell Hardness Chart. -
correct answer ✔✔c
Hardness property of material is a body's ability to:
a. Absorb impact
b. Resist penetration
c. Resist bending
d. Absorb heat
e. Resist breaking. - correct answer ✔✔b
, Materials which break rather than bend even though great force is required to break them are said to
be:
a. Hard
b. Brittle
c. Malleable
d. Tough
e. Ductile. - correct answer ✔✔b
A material is said to possess _____ if it is very soft and easily deformed.
a. Plasticity
b. Hardness
c. Ductility
d. Brittleness
e. Elasticity. - correct answer ✔✔a
If a material does not have the property of ductility then it will be:
a. Tough
b. Hard
c. Malleable
d. Brittle
e. Plastic. - correct answer ✔✔d
_____ refers to that property of a material which enables it to resist wear, abrasion and penetration.
a. Brittleness
b. Stiffness
c. Hardness
d. Toughness
e. Elasticity. - correct answer ✔✔c
