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WorksheetsEng L3 Stress/Strain
Total questions: 20
Worksheet time: 13mins
What is Hookes law?
Extension is directly proportional to length
Extension is directly proportional to force applied
Extension is inversly proportional to force applied
Peter Pan isn't nice
Denisty it measured in what units?
kgm3
kg2m
kgm−3
inchyards
Tensile (a) is force applied per the perpendicular cross sectional area
Tensile (a) is a measure of how much a material stretches under a direct force
A brittle material is one which:
Doesn't deform plastically but breaks when the stress is too high
Deforms plastically
Deforms elastically and will return to its original shape
Deforms to a new shape with little force
The elastic limit is the force above which a material will (a)
Area under a force-extension graph represents
(a)
What is Young's Modulus?
StrainStress
StressStrain
ΔLAL
∞
How do you find the Young's Modulus from a stress-strain graph?
Area under the line
Gradient of the line
Integral of the line
ΔyΔx
Which graph represents a wire which has plastically deformed?
Left graph
Right graph
Where is the ultimate tensile strength on a stress-strain graph?
The lowest point
The highest point
The furthest right
The furthest left
The symbol used to represent direct stress is?
The symbol used to measure direct strain is?
The unit of direct stress is?
The unit of direct strain is?
The modulus of elasticity (or Young's modulus) is measured in?
Metres (m)
Newtons (N)
Pascals or Newtons per square metre (Pa)
Length is measured in?
metres
Force is measured in?
The SI unit for Area is?
I feel confident with this topic
True
False
