Theory of Structures
A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm² and Poisson’s ratio is 0.25, the change in the volume of the bar is:

1.125 cm³
3.125 cm³
2.125 cm³
4.125 cm²

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Theory of Structures
Pick up the correct statement from the following:

If tensile stress is equal to axial stress, the section experiences compressive stress
The moment of inertia is calculated about the axis about which bending takes place
All of these
If tensile stress is less than axial stress, the section experiences compressive stress

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