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The property, by virtue of witch certain materials return to their original thaw

ID: 1719015 • Letter: T

Question

The property, by virtue of witch certain materials return to their original thaw after the removal of the force, it called Ductility Plasticity Stiffen Elasticity The stress developed In a material that is being stretched to breaking point li called- Braking stress Fracture stress yield stress Ultimate stress Shear stress in a shaft subjected to torsion will be: Maximum at the circumference and era at the center Maximum at the center Uniform throughout None of the above Strain is defined as the ratio of: Change in volume to original volume Change in length to original length Change in cross-sectional area to original cross-sectional area All of the above

Explanation / Answer

e) 4

The property according to which materails return to its original shape is Elasticity according to Hookes Law

f) 2

At the breaking point the stress is fracture stress on the stress vs strain diagram

g) 1

The shear stress is given by T*r/J

Where r is the distance from the center

At circumference r = R therefore the shear stress is maximum at circumference

At center r = 0 therefore the shear stress is zero at the center

h) 2

Strain is defined as ratio of change in lenght to its original length