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Mechanical Engineering :: Strength of Materials

  1. The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.

  2. A.
    equal to
    B.
    less than
    C.
    more than

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  3. The direct stress induced in a long column is __________ as compared to bending stress.

  4. A.
    same
    B.
    more
    C.
    less
    D.
    negligible

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  5. The shear force of a cantilever beam of length l carrying a uniformly distributed load of w per unit length is __________ at the free end.

  6. A.
    zero
    B.
    wl/4
    C.
    wl/2
    D.
    wl

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  7. The extension of a circular bar tapering uniformly from diameter d1 at one end to diameter d2 at the other end, and subjected to an axial pull of P is __________ the extension of a circular bar of diameter d1 d2 subjected to the same load P.

  8. A.
    equal to
    B.
    less than
    C.
    greater than

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  9. In case of an over-reinforced beam, the depth of actual neutral axis is the same as that of the critical neutral axis.

  10. A.
    True
    B.
    False

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  11. The thickness of a thin cylindrical shell with hemispherical ends is __________ that of spherical ends.

  12. A.
    equal to
    B.
    more than
    C.
    less than

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  13. The assumption made in Euler's column theory is that

  14. A.
    the failure of column occurs due to buckling alone
    B.
    the length of column is very large as compared to its cross-sectional dimensions
    C.
    the column material obeys Hooke's law
    D.
    all of the above

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  15. The limit of eccentricity for no tensile conditions for a column of circular section of diameter (d) is

  16. A.
    d/4
    B.
    d/8
    C.
    d/12
    D.
    d/16

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  17. The bending moment at the ends of a simply supported beam will be zero.

  18. A.
    Yes
    B.
    No

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