Theory of Structures
A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is

(1 – g/f)/A
[W (2 + f/G)]/A
[W (1 + f/ G)]/ A
[W (2 + g/f)]/A

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Theory of Structures
A compound bar consists of two bars of equal length. Steel bar cross -section is 3500 mm²and that of brass bar is 3000 mm². These are subjected to a compressive load 100,000 N. If Eb = 0.2 MN/mm² and Eb = 0.1 MN/mm², the stresses developed are:

b = 8 N/mm² s = 16 N/mm²
b = 10 N/mm² s = 20 N/mm 2
b = 5 N/mm² s = 10 N/mm²
b = 6 N/mm² s = 12 N/mm²

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

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

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