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13 questions
An object that is deformed by a force and returns to its original form when the force is removed is exhibiting the property of elasticity.
True
False
A nylon string has a diameter of 2 mm, pulled by a force of 100 N. Determine the stress.
2.35 x 10^{7} N/m^{2}
3.15 x 10^{7} N/m^{2}
4.15 x 10^{7} N/m^{2}
A string has a diameter of 1 cm and the original length of 2 m. The string is pulled by a force of 200 N. Determine the change in length of the string. Young’s modulus of the string is 5 x 10^{9} N/m^{2}
0.42 m
0.33 m
0.26 m
0.18 m
Which of these factors does NOT affect the stress of a wire?
diameter
original length
load
cross sectional area
What is the unit for stress?
N/m^{3}
N*m^{3}
N*m^{2}
N/m^{2}
Greater the angle of inclination of the stress strain curve less is the elasticity.
True
False
It is expressed as the ratio of the applied force divided by the resisting area.
elongation
stress
strain
tensile strength
The amount of deformation in the direction of the applied force divided by the initial length of the material.
Stress
Strain
Pascals
Force
What is zone A called?
Plastic zone
Elastic zone
Brittle zone
What is point B called?
Elastic limit
Plastic limit
Fracture point
What kind of behavior is exhibited in point D?
Elastic
Plastic
Brittle
What happens in point E?
Plastic limit
Elastic limit
Brittle failure
In which point is the material permanently deformed but without fracturing?
A
B
C
D
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