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Civil Engineering :: Theory of Structures

  1. Stress may be expressed in Newtons

  2. A.

    per millimetre square (N/mm2)

    B.

    per centimetre square (N/cm2)

    C.

    per metre square (N/m2)

    D.

    All of the above.

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  3. Principal planes are subjected to

  4. A.

    normal stresses only

    B.

    tangential stresses only

    C.

    normal stresses as well as tangential stresses

    D.

    none of these.

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  5. In plastic analysis, the shape factor for a circular section, is

  6. A.

    1.5

    B.

    1.6

    C.

    1.7

    D.

    1.75

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  7. Keeping the depth d constant, the width of a cantilever of length l of uniform strength loaded with a uniformly distributed load w varies from zero at the free end and

  8. A.

    \(\frac { 2w } { \sigma d^2} *I^2\) at the fixed end

    B.

    \(\frac { 3w } { \sigma d} *I^2\)at the fixed end

    C.

    \(\frac { 3w } { \sigma d^2} *I^2\)at the fixed end

    D.

    \(\frac { 5w } { \sigma d} *I^2\)at the fixed end


  9. The total strain energy of a beam of length L, having moment of inertia of its section I, when subjected to a bending moment M, is

  10. A.

    \( \frac { M^2 } { EI } \)

    B.

    C.

    D.


  11. A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm2 is :

  12. A.

    4.0 mm

    B.

    4.5 mm

    C.

    5.0 mm

    D.
    5.5 mm
    E.

    6.0 mm

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  13. The force in BF of the truss shown in given figure, is

  14. A.

    4t tension

    B.

    4t compression

    C.

    4.5t tension

    D.

    4.5t compression

    E.

    zero.


  15. The radius of gyration of a section of area A and least moment of inertia I about the centroidal axis, is

  16. A.

    \(\frac { A } { I} \)

    B.

    \(\frac { I} { A} \)

    C.

    \( \sqrt\frac { I } {A } \)

    D.

    \( \sqrt\frac { A } {I} \)


  17. 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

  18. A.

    \( \frac { wa} { 2 7} \)

    B.

    \( \frac { wa^2} { 27} \)

    C.

    \( \frac { w^2a} { \sqrt{ 27}} \)

    D.

    \( \frac { w^2a} { 9\sqrt{ 3}} \)


  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.

    \( \frac { wa} { 2 7} \)

    B.

    \( \frac { wa^2} { 27} \)

    C.

    \( \frac { w^2a} { \sqrt{ 27}} \)

    D.

    \( \frac { w^2a} { 9\sqrt{ 3}} \)