SOM Quiz-1
Strength of Materials Quiz
Test your knowledge on the principles of mechanics and material strength with our engaging quiz! This quiz covers various topics including tensile tests, stress analysis, and shear forces.
Join now to challenge yourself and learn:
- Tensile stress calculations
- Understanding shear forces
- Material properties and behaviors
A tensile test is carried out on a bar of mild steel of diameter 2 cm. The bar yields under a load of 80 kN. It reaches a maximum load of 150 kN. And finally breaks a load of 70 kN. If the diameter of fracture neck in 1 cm, calculate the ratio of Ultimate Tensile Stress and the Breaking Point Stress.
1.80
2.02
0.53
1.55
At certain point in a material, normal stresses of 40 MPa (tensile) and 25 MPa (compressive) act with shearing stress 20 MPa. If stresses are increased by x-times the maximum value of stress then find k, such that maximum direct stress in the material is not to exceed 100 MPa
2.19
1.76
2.76
1.19
A hollow shaft is stronger in torsion than a solid shaft of the same area of of cross-section because
It is lighter in weight
It has zero stress at the centre
It has larger polar moment of inertia
It has greater value of Young’s modulus
A square of 20 mm side is used as a beam with its diagonal in the horizontal position. If the vertical shear force at a section is 2 kN, the value of maximum shear stress occuring in the cross-section would be ___ MPa.
6.239
7.568
8.987
5.625
Tensile stresses in two mutually perpendicular directional stress system are 50 MPa and 100 MPa. The strain energy of the system, if E = 2 × 10 5 N/mm2, is _____ kJ/m3, Poisson’s ratio is 0.3.
23.75
28.95
33.65
38.75
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