Metals in Construction
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Lesduur is: 10 minOnderdelen in deze les
Slide 1 - Tekstslide
What is the term used to describe a metal's ability to be stretched or drawn into wires without breaking?
timer
0:10
A
Brittleness
B
Hardness
C
Ductility
D
Toughness
Slide 2 - Quizvraag
What is the property that allows metals to be flattened or compressed into thin sheets?
timer
0:10
A
Elasticity
B
Malleability
C
Strength
D
Hardness
Slide 3 - Quizvraag
True or false: Metals are excellent conductors of both electricity and heat.
timer
0:10
A
True
B
False
Slide 4 - Quizvraag
In the context of metals, what does the term "lustre" refer to?
timer
0:10
A
Colour
B
Shiny, reflective appearance when polished
C
Ability to conduct electricity
D
Resistance to heat
Slide 5 - Quizvraag
Name a metal that is widely used in electrical wiring due to its excellent electrical conductivity.
timer
0:10
A
Copper
B
Brass
C
Aluminium
D
Lead
Slide 6 - Quizvraag
Slide 7 - Tekstslide
What is the term for the regular arrangement of atoms in a metal?
timer
0:10
A
Atomic Huddle
B
Atomic Order
C
Crystal Lattice
D
Crystal Meth
Slide 8 - Quizvraag
Name the three most common crystal structures in metals.
timer
0:10
A
HCP, FCC, BCC
B
ABC, XYZ, DEF
C
GHI, JKL, MNO
D
123, 456, 789
Slide 9 - Quizvraag
Which crystal structure has the lowest atomic packing factor?
timer
0:10
A
BCC
B
FCC
C
HCP
D
DEF
Slide 10 - Quizvraag
How do dislocations affect the properties of metals?
timer
0:10
A
They make metals ductile.
B
They increase metals' toughness.
C
They improve metals' electrical conductivity.
D
They have no effect on metals.
Slide 11 - Quizvraag
Increasing the number of dislocations in a metal increases its ductility
timer
0:10
A
True
B
False
Slide 12 - Quizvraag
Which type of dislocation involves an extra half plane of atoms in the lattice?
timer
0:10
A
Screw Dislocation
B
Linear Dislocation
C
Edge Dislocation
D
Point Dislocation
Slide 13 - Quizvraag
How does controlling grain size strengthen a metal?
timer
0:10
A
By adding more alloying elements
B
By increasing temperature during manufacturing
C
By making the grains larger
D
By making the grains smaller
Slide 14 - Quizvraag
Apart from crystal structure, what else affects the density of a metal?
timer
0:10
A
The shape of the atoms
B
Atomic number of the atoms
C
Number of electrons within the atoms
D
Atomic weight of the atoms
Slide 15 - Quizvraag
Slide 16 - Tekstslide
A measure of a material's resistance to deformation
timer
0:10
A
Strength
B
Stiffness
C
Hardness
D
Toughness
Slide 17 - Quizvraag
The ability of a material to absorb energy by impact or sudden blow before fracture.
timer
0:10
A
Strength
B
Fatigue Resistance
C
Hardness
D
Toughness
Slide 18 - Quizvraag
A material's resistance to abrasion or indentation
timer
0:10
A
Strength
B
Fatigue Resistance
C
Hardness
D
Creep Resistance
Slide 19 - Quizvraag
How well a material can endure repeated loading and unloading cycles without failing
timer
0:10
A
Strength
B
Fatigue Resistance
C
Ductility
D
Creep Resistance
Slide 20 - Quizvraag
A material's resistance to long-term deformation under a permanent load
timer
0:10
A
Strength
B
Fatigue Resistance
C
Ductility
D
Creep Resistance
Slide 21 - Quizvraag
Slide 22 - Tekstslide
A steel spring has a stiffness of 0.01N/mm, under a load of 0.4N. Calculate the extension of the spring?
timer
1:00
A
0.025 mm
B
0.04 mm
C
4 mm
D
40 mm
Slide 23 - Quizvraag
A steel tie with a cross-section measuring 0.025m x 0.025m is subjected to an axial pull of 100,000N. Calculate the normal tensile stress.
timer
1:00
A
62.5x10^-9 N/m^2
B
62.5 N/m^2
C
160 N/m^2
D
160x10^6 N/m^2
Slide 24 - Quizvraag
If under this stress, the 2m long tie extended by 3mm, what is the strain?
timer
1:00
A
0.0015
B
0.0015N/m
C
6000
D
6000N/m
Slide 25 - Quizvraag
Determine Young's modulus in N/m^2 for this steel tie, with a stress of 160x10^6 N/m^2 and a strain of 0.0015.
timer
1:00
A
240,000 N/m^2
B
240,000 m.N
C
106x10^9 N/m^2
D
106x10^9 m.N
