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Civil Engineering :: Theory of Structures

  1. The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called

  2. A.

    stiffness

    B.

    proof resilience

    C.

    proof stress

    D.

    proof load.

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

  4. A.

    horizontal thrust is wl2/8h

    B.

    S.F. will be zero throughout

    C.

    B.M. will be zero throughout

    D.

    all the above.

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  5.  

    Co-efficient of wind resistance of a circular surface, is

  6. A.

    \( \frac { 1 } { 2 } \)

    B.

    \( \frac { 1 } { 3 } \)

    C.

    \( \frac { 2 } { 3 } \)

    D.

    \( \frac { 3 } { 2 } \)


  7. Pick up the correct statement from the following:

  8. 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.

    For a load varying linearly, the B.M. curve is a cubic parabola

    E.

    All the above.

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  9. The ratio of moments of inertia of a triangular section about its base and about a centroidal axis parallel to its base, is

  10. A.
    1.0
    B.

    1.5

    C.

    2.0

    D.

    2.5

    E.

    3.0

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  11. The ratio of shear stress and shear strain of an elastic material, is

  12. A.

    Modulus of Rigidity

    B.

    Shear Modulus

    C.

    Young's Modulus

    D.

    Modulus of Elasticity

    E.

    both (a) and (b).

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  13.  

    The ratio of the maximum deflections of a simply supported beam with a central load W and of a cantilever of same length and with a load W at its free end, is

  14. A.

    \(\frac { 1 } {8 } \)

    B.

    \(\frac { 1 } {10 } \)

    C.

    \(\frac { 1 } {12 } \)

    D.

    \(\frac { 1 } {14 } \)

    E.

    \(\frac { 1 } {16 } \)


  15. The greatest load which a spring can carry without getting permanently distorted, is called

  16. A.

    stiffness

    B.

    prof resilience

    C.

    proof stress

    D.

    proof load.

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  17. The horizontal deflection of a parabolic curved beam of span 10 m and rise 3 m when loaded with a uniformly distributed load l t per horizontal length, is (where Ic is the M.I. at the crown, which varies as the slope of the arch).

  18. A.

    \( \frac { 50} { EIc } \)

    B.

    \( \frac { 100} { EIc } \)

    C.

    \( \frac {1 50} { EIc } \)

    D.

    \( \frac { 200} { EIc } \)

    E.

    \( \frac { 250} { EIc } \)


  19.  

    A three hinged arch is generally hinged at its supports and

  20. A.
    at one quarter span
    B.

    at the crown

    C.

    any where in the rib

    D.

    none of these.

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