Multiple choose Help Strain energy is the? A. energy stored in a body when strai
ID: 1842228 • Letter: M
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Multiple choose Help
Strain energy is the? A. energy stored in a body when strained within elastic limits B. energy stored in a body when strained upto the breaking of a specimen C. maximum strain energy which can be stored in a body D. proof resilience per unit volume of a material A vertical column has two moments of inertia (i.e. Ixx and Iyy). The column will tend to buckle in the direction of the A. Axis of load B. Perpendicular to the axis of load C. Maximum moment of inertia D. Minimum moment of inertia The neutral axis of the cross-section a beam is that axis at which the bending stress is A. zero B. minimum C. maximum D. infinity A steel bar of 5 mm is heated from 15 degree C to 40 degree C and it is free to expand. The bar Will induce A. no stress B. shear stress C. tensile stress D. compressive stress If the slenderness ratio for a column is 100, then it is said to be a _______ column. A. long B. medium C. shortExplanation / Answer
1. Strain energy is the energy stored in a body when strained within elaslic Iimits. Therefore, the answer is A.
2. The column will tend to buckle in the direction of the minimum moment of inertia. Therefore, the answer is D.
3. The neutral axis is the axis through a beam where the stress is zero, that is there is neither compression nor tension. For cross sections symmetrical in the plane of bending this is half way down. It is a line through the centre of area of the cross-section at right angles to the applied load. Therefore, the answer is A.
4. Since, the bar is free to expand, there will not be any stress. Therefore, the answer is A.
5. For short column, slenderness ratio<=50.
For medium column, 50<slenderness ratio<=120.
For long column, slenderness ratio>120.
Therefore, the answer is B.
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