Civil Engineering :: Theory of Structures
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The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is
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A material is said to be perfectly elastic if
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For calculating the allowable stress of long columns. The empirical formula
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Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as
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Pick up the correct statement from the following:
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The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is
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Two bars, one of steel and the other of copper having areas of cross-sections As and Ac, coefficient of expansion \(\alpha\)s and \(\alpha\)c and Young's Modulii Es and Es are rigidly connected together at the ends and subjected to temperature change of t°. If the length of the bars initially is L, the final extension \(\delta\) of the two bars at t° temperature is given by
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The tangential component of stress on an plane inclined θ° to the direction of the force, may be obtained by multiplying the normal stress by
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The force in AD of the truss shown in given figure, is
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There are two hinged semicircular arches A, B and C of radii 5 m, 7.5 m and 10 m respectively and each carries a concentrated load W at their crowns. The horizontal thrust at their supports will be in the ratio of
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A.
In a loaded beam, the moment at which the first yield occurs is called yield moment |
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B.
In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment |
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C.
In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area |
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D.
The ratio of plastic moment to the yield moment, is called shape factor |
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E.
All the above. |
