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Civil Engineering :: Theory of Structures

  1. Shear strain energy theory for the failure of a material at elastic limit, is due to

  2. A.

     Rankine

    B.

     Guest or Trecas

    C.

     St. Venant

    D.

     Von Mises


  3. The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is

  4. A.

     F/A

    B.

     F/2A

    C.

     3F/2A

    D.

     2F/3A


  5. A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm². If the slope at the ends is 0.005 radian and the value of E = 0.2 × 106 N/mm², the depth of the joist, is

  6. A.

     200 mm

    B.

     250 mm

    C.

     300 mm

    D.

     400 mm


  7. A short column (30 cm × 20 cm) carries a load P 1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be

  8. A.

     2/3

    B.

     3/2

    C.

     8/5

    D.

     5/8


  9. A compound truss may be formed by connecting two simple rigid frames, by

  10. A.

     Two bars

    B.

     Three bars

    C.

     Three parallel bars

    D.

     Three bars intersecting at a point


  11. If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span,

  12. A.

     Horizontal thrust is wl2/8h

    B.

     S.F. will be zero throughout

    C.

     B.M. will be zero throughout

    D.

     All the above


  13. constant, depth of a cantilever of length of uniform strength loaded with Keeping breadth uniformly distributed load varies from zero at the free end and

  14. A.

     2w w l at the fixed end

    B.

     l) at the fixed end

    C.

     w l) at the fixed end

    D.

     3w l at the fixed end


  15. A cantilever of length ‘L’ is subjected to a bending moment ‘M’ at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is

  16. A.

     ML/EI

    B.

     ML/2EI

    C.

     ML²/2EI

    D.

     ML²/3EI


  17. A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm², the deflection of the free end, is

  18. A.

     2 mm

    B.

     3 mm

    C.

     4 mm

    D.

     5 mm


  19. In the truss, the force in the member AC is

  20. A.

     6.25 t compressive

    B.

     8.75 t tensile

    C.

     t tensile

    D.

     t compressive