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Civil Engineering :: Theory of Structures

  1. A road of uniform cross-section A and length L is deformed by δ, when subjected to a normal force P. The Young's Modulus E of the material, is

  2. A.

    E = \( \frac { p.\delta} { A.L } \)

    B.

    E = \( \frac { A.\delta} { P.L } \)

    C.

    E = \( \frac { P.L} { A.\delta } \)

    D.

     E = \( \frac { P.A} { L.\delta } \)


  3. The S.F. diagram of a loaded beam shown in the given figure is that of

  4. A.

    a simply supported beam with isolated central load

    B.

    a simply supported beam with uniformly distributed load

    C.

    a cantilever with an isolated load at the free end

    D.

    a cantilever with a uniformly distributed load.


  5. An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 2l and rise h hinged at the crown, the horizontal reaction at the support, is

  6. A.

    \( \frac { Wa } { h } \)

    B.

    \( \frac { Wa } {2 h } \)

    C.

    \( \frac {2 W } { h a} \)

    D.

    \( \frac {2 h } { W a} \)


  7.  

    The ratio of lateral strain to axial strain of a homogeneous material, is known

  8. A.

    Yield ratio

    B.

    Hooke's ratio

    C.

    Poisson's ratio

    D.

    Plastic ratio.


  9. For beams of uniform strength, if depth is constant,

  10. A.

    width b ∝ M

    B.

    width b ∝ \(\sqrt{M}\)

    C.

    width b ∝ 3 \(\sqrt{M}\)

    D.

    width b ∝ \(\frac { 1 } { M } \)


  11.  

    The area of the core of a column of cross sectional area A, is

  12. A.

    \(\frac { 1 } { 3 } \) A

    B.

    \(\frac { 1 } { 6 } \) A

    C.

    \(\frac { 1 } { 12} \)  A

    D.

    \(\frac { 1 } { 18} \) A


  13.  

    A simply supported beam carries a varying load from zero at one end and w at the other end. If the length of the beam is a, the shear force will be zero at a distance x from least loaded point where x is

  14. A.

    \(\frac { a} { 2 } \)

    B.

    \(\frac { a} { 3 } \)

    C.

    \(\frac { a} { \sqrt{3} } \)

    D.

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


  15. The locus of reaction of a two hinged semi-circular arch, is

  16. A.

    straight line

    B.

    parabola

    C.

    circle

    D.

    hyperbola.


  17. The ratio of the area of cross-section of a circular section to the area of its core, is

  18. A.

    4

    B.

    8

    C.

    12

    D.

    16


  19. The yield moment of a cross section is defined as the moment that will just produce the yield stress in

  20. A.

    the outer most fibre of the section

    B.

    the inner most fibre of the section

    C.

    the neutral fibre of the section

    D.

    the fibre everywhere