Theory of Structures
For determining the support reactions at A and B of a three hinged arch, points B and Care joined and produced to intersect the load line at D and a line parallel to the load line through A at D’. Distances AD, DD’ and AD’ when measured were 4 cm, 3 cm and 5 cm respectively. The angle between the reactions at A and B is

60°
45°
30°
90°

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

In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area
All of these
In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment
In a loaded beam, the moment at which the first yield occurs is called yield moment

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