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Mechanical Engineering :: Strength of Materials

  1. A thin cylindrical shell of diameter (d), length (l) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to hoop strain is


  2. A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is and lies at the centre of the beam.

  3. A.
    True
    B.
    False

  4. When a rectangular bar of length l, breadth b and thickness t is subjected to an axial pull of P, then linear strain (ε) is given by (where E = Modulus of elasticity)


  5. When a body is subjected to bi-axial stress i.e. direct stresses (σx) and (σy) in two mutually perpendicular planes accompanied by a simple shear stress (τxy), then maximum normal stress is


  6. In a thick cylindrical shell subjected to an internal pressure (p), the tangential stress across the thickness of a cylinder is

  7. A.
    maximum at the outer surface and minimum at the inner surface
    B.
    maximum at the inner surface and minimum at the outer surface
    C.
    maximum at the outer surface and zero at the inner surface
    D.
    maximum at the inner surface and zero at the outer surface

  8. The strength of the un-riveted or solid plate per pitch length is

  9. A.
    d.tc
    B.
    p.tt
    C.
    (p - d)t.σt
    D.
    π/2 x d2 x τ

  10. The relation between Young's modulus (E) and bulk modulus (K) is given by


  11. A simply supported beam is one which is supported on more than two supports.

  12. A.
    True
    B.
    False

  13. For long columns, thevalue of buckling load is __________ crushing load.

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

  15. For the beam shown in the below figure, the shear force diagram between A and B is

  16. A.
    a horizontal line
    B.
    a vertical line
    C.
    an inclined line
    D.
    a parabolic curve