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Mechanical Engineering :: Strength of Materials

  1. The maximum shear stress in a thin spherical shell subjected to an internal pressure (p) is zero.

  2. A.
    Yes
    B.
    No

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  3. The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, l = Original length of the body, A = Cross-sectional area of the body, and E = Young's modulus for the material of the body)

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  5. The assumption, generally, made in the theory of simple bending is that

  6. A.
    the beam material is perfectly homogenous and isotropic
    B.
    the beam material is stressed within its elastic limit
    C.
    the plane sections before bending remain plane after bending
    D.
    all of the above

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

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

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  9. In the below figure, stress is proportional to strain, for the portion

  10. A.
    from O to A
    B.
    from A to C
    C.
    from A to D
    D.
    from D to E

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  11. The product of Young's modulus (E) and moment of inertia (I) is known as

  12. A.
    modulus of rigidity
    B.
    bulk modulus
    C.
    flexural rigidity
    D.
    torsional rigidity

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  13. The relation between equivalent length (L) and actual length (l) of a column for both ends fixed is

  14. A.
    L = l/2
    B.
    L = l/2
    C.
    L = l
    D.
    L = 2l

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  15. The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

  16. A.
    2/3
    B.
    3/4
    C.
    1
    D.
    9/8

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  17. Transverse fillet welds are designed for

  18. A.
    tensile strength
    B.
    compressive strength
    C.
    shear strength
    D.
    bending strength

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  19. A beam of triangular section is placed with its base horizontal. The maximum shear stress occurs at

  20. A.
    apex of the triangle
    B.
    mid of the height
    C.
    centre of gravity of the triangle
    D.
    base of the triangle

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