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MP Sub-Engineer ME: Stress and Strain Quiz 12
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Question 1
Find the modulus of elasticity of a rod, which tapers uniformly from 30 mm to 15 mm diameter in a length of 300 mm. The rod is subjected to axial load of 5 kN and extension of rod is 0.022 mm.
Question 2
When mild steel is subjected to a tensile load, its fracture will conform to ____.
Question 3
A steel bar of 40 mm × 40 mm square cross-section is subjected to an axial compressive load of 200 kN. If the length of the bar is 2m and E = 200 GPa, the compression of the bar will be:
Question 4
A rod of length L having uniform cross-sectional area A is subjected to a tensile force P as shown in the figure below. If the Young’s modulus of the material varies linearly from E1 to E2 along the length of the rod, the normal stress developed at the section-SS is
Question 5
A prismatic bar has a cross-section of 25mm x 50mm and a length of 3m. Under an axial tensile force of 100kN. Compute the tensile stress (in MPa).
Question 6
Find the total extension in the stepped bar with an axial tensile load of 50 kN and having varying length of 2m, 3m, 5m and area of 200mm2, 250mm2 and 300 mm2 as shown in given figure. E= 2×105 N/ mm2 .
Question 7
The change in length per unit instantaneous length is _________.
Question 8
In C.G.S system, the unit of strain is:
Question 9
The resistance per unit area, offered by a body against deformation is known as __________.
Question 10
Hooke’s law is valid upto __________.
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