
STRESS AND STRAIN
Authored by WINCENTRE CLASSES
Professional Development
Professional Development
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Poisson ratio depends on
Lateral strain
Stress
Material of specimen
None
Answer explanation
It is a material property that describes how a material deforms laterally when stretched or compressed longitudinally.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stress is a ___ quantity
Vector
Scalar
Tensor
None of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a piece of material neither expands nor contracts in volume when subjected to stresses, then the Poisson’s ratio must be?
Answer explanation
If a material does not change in volume under stress (i.e., no volumetric strain), this implies it is perfectly incompressible.
In such a case, the Poisson's ratio (ν) is:0.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When tensile stress is applied axially on a circular rod its
diameter decreases
length increases
Volume decreases
Both A and B
Answer explanation
When tensile stress is applied axially on a circular rod, the following occurs:
Length increases — due to elongation along the axis (longitudinal strain).
Diameter decreases — due to lateral contraction (lateral strain).
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which one of the following is a unit less factor
stress
strain
young's modulus
both b and c
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes shear force in a material?
A force acting perpendicular to the cross-section causing elongation
A force that changes only the volume of the material
A force acting parallel to the cross-section causing layers to slide
A compressive force that shortens the material
Answer explanation
Shear force acts parallel to the cross-sectional area of a material.
It causes internal layers to slide past each other
Unlike normal stress (which causes elongation or compression), shear stress results in shape distortion (change in angle, not volume).
This force is crucial in materials like bolts, rivets, or beams, which resist sliding failure.
Shear force acts parallel to the cross-sectional area of a material.
It causes internal layers to slide past each other
Unlike normal stress (which causes elongation or compression), shear stress results in shape distortion (change in angle, not volume).
This force is crucial in materials like bolts, rivets, or beams, which resist sliding failure.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following material has Poisson's ratio greater than 1?
Steel
Cork
Copper
None
Answer explanation
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