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Civil Engineering :: Theory of Structures

  1. The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is

  2. A.

     1/4

    B.

     1/2

    C.

     1

    D.

     2

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  3. The ratio of circumferential stress to the longitudinal stress in the walls of a cylindrical shell, due to flowing liquid, is

  4. A.

     ½

    B.

     1

    C.

     1½

    D.

     2

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  5. Stress may be defined as

  6. A.

     Force per unit length

    B.

     Force per unit volume

    C.

     Force per unit area

    D.

     None of these

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  7. A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm² and Poisson’s ratio is 0.25, the change in the volume of the bar is:

  8. A.

     1.125 cm³

    B.

     2.125 cm³

    C.

     3.125 cm³

    D.

     4.125 cm²

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  9. For the close coil helical spring of the maximum deflection is

  10. A.

     WD3n/d4N

    B.

     2WD3n/d4N

    C.

     4W²D3n/d4N

    D.

     8WD3n/d4N

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  11. The vertical reaction for the arch is

  12. A.

     wa/2l

    B.

     wl/a

    C.

     wa/l

    D.

     wa²/2l

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  13. Pick up the correct statement from the following:

  14. A.

     For a uniformly distributed load, the shear force varies linearly

    B.

     For a uniformly distributed load, B.M. curve is a parabola

    C.

     For a load varying linearly, the shear force curve is a parabola

    D.

     All the above

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  15. If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:

  16. A.

     Q = S + F

    B.

     Q = S – F

    C.

     Q = F – S

    D.

     Q = S × F

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  17. The locus of the end point of the resultant of the normal and tangential components of the stress on an inclined plane, is

  18. A.

     Circle

    B.

     Parabola

    C.

     Ellipse

    D.

     Straight line

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  19. A simply supported beam carries varying load from zero at one end and w at the other end. If the length of the beam is a, the maximum bending moment will be

  20. A.

     wa/27

    B.

     wa²/27

    C.

     w²a

    D.

     wa²

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