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Mechanical Engineering :: Strength of Materials

  1. The strength of a riveted joint is equal to the

  2. A.
    pull required to tear off the plate per pitch length (Pt)
    B.
    pull required to shear off the rivet per pitch length (Ps)
    C.
    pull required to crush the rivet per pitch length (Pc)
    D.
    minimum value of Pt, Ps or Pc

  3. In the below figure, Hook's law holds good, for the portion from O to A.

  4. A.
    Agree
    B.
    Disagree

  5. The neutral axis of the symmetrical beam does not pass through the centroid of the beam.

  6. A.
    Agree
    B.
    Disagree

  7. The Poisson's ratio for steel varies from

  8. A.
    0.23 to 0.27
    B.
    0.27 to 0.30
    C.
    0.31 to 0.34
    D.
    0.32 to 0.42

  9. The deformation of a bar under its own weight is __________ the deformation, if the same body is subjected to a direct load equal to weight of the body.

  10. A.
    equal to
    B.
    half
    C.
    double
    D.
    quadruple

  11. A thick cylindrical shell having ro and ri as outer and inner radii, is subjected to an internal pressure (p). The minimum tangential stress at the outer surface of the shell is


  12. In a simple bending theory, one of the assumption is that the plane sections before bending remain plane after bending. This assumption means that

  13. A.
    stress is uniform throughout the beam
    B.
    strain is uniform throughout the beam
    C.
    stress is proportional to the distance from the neutral axis
    D.
    strain is proportional to the distance from the neutral axis

  14. The maximum shear stress, in the given figure, is equal to __________ of the Mohr's circle.

  15. A.
    radius
    B.
    diameter
    C.
    circumference
    D.
    area

  16. A simply supported beam of length l carries a point load W at a point C as shown in the below figure. The maximum deflection lies at

  17. A.
    point A
    B.
    point B
    C.
    point C
    D.
    between points B and C

  18. When a body is subjected to direct tensile stresses (σx and σy ) in two mutually perpendicular directions, accompanied by a simple shear stress τxy , then in Mohr's circle method, the circle radius is taken as