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Theory of Structures

Theory of Structures
In case of a simply supported rectangular beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is

L/3
L/5
L/4
L/2

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Theory of Structures
Principal planes are subjected to

Normal stresses as well as tangential stresses
None of these
Tangential stresses only
Normal stresses only

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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°
30°
90°
45°

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Theory of Structures
section modulus of a square section of side B and that of a circular section of the ratio of the diameter D, is

2 /15
3 /8
/16
3 /16

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Theory of Structures
Maximum principal stress theory for the failure of a material at elastic point, is known

Guest's or Trecas' theory
St. Venant's theory
Von Mises' theory
Rankine's theory

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Theory of Structures
P = 4π² EI/L² is the equation of Euler's crippling load if

Both the ends are hinged
One end is fixed and other end is hinged
Both the ends are fixed
One end is fixed and other end is free

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