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Mechanics of Materials
Quiz o Clock
What is the definition of stress in materials?
A.Force per unit area
B. Displacement per unit length
C.Energy per unit volume
D.Force per unit volume
What is Young's Modulus a measure of?
A.Elasticity
B.Plasticity
C.Shear strength
D.Toughness
Which of the following materials typically has the highest modulus of elasticity?
A.Rubber
B.Steel
C.Aluminum
D.Wood
In a stress-strain curve, what does the area under the curve represent?
A. Modulus of elasticity
B.Yield strength
C. Toughness
D.Hardness
What is Poisson's ratio?
A.Ratio of longitudinal strain to lateral strain
B. Ratio of lateral strain to longitudinal strain
C.Ratio of shear stress to shear strain
D.Ratio of volumetric stress to volumetric strain
Which type of loading is most likely to cause buckling in a slender column?
A. Torsional loading
B.Compressive loading
C. Tensile loading
D.Shear loading
What is the term for the maximum stress that a material can withstand without permanent deformation?
A.Ultimate strength
B.Yield strength
C.Fracture strength
D.Endurance limit
Which property measures a material's ability to resist deformation under shear stress?
A.Shear modulus
B. Bulk modulus
C.Young's modulus
D.Poisson's ratio
What is fatigue failure in materials?
A. Failure due to repeated cyclic loading
B.Failure due to sudden impact
C.Failure due to excessive heat
D.Failure due to chemical reactions
What is the main difference between ductile and brittle materials?
A. Ductile materials can withstand higher temperatures.
B.Ductile materials can undergo significant plastic deformation before failure.
C.Brittle materials have higher elasticity.
D. Brittle materials can absorb more energy before failure.
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