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Mechanical Engineering :: Strength of Materials

  1. A reinforced cement concrete beam is considered to be made of

  2. A.
    homogeneous material
    B.
    hetrogeneous material
    C.
    composite material
    D.
    isotropic material

  3. The radius of the Mohr 's circle in the given figure is equal to

  4. A.
    sum of two principal stresses
    B.
    difference of two principal stresses
    C.
    half the sum of two principal stresses
    D.
    half the difference of two principal stresses

  5. 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 given by


  6. The ratio of bulk modulus to Young's modulus for a Poisson's ratio of 0.25 will be

  7. A.
    1/3
    B.
    2/3
    C.
    1
    D.
    3/2

  8. The bending moment diagram for a cantilever beam of length l and carrying a gradually varying load from zero at the free end and w per unit length at the fixed end is a parabolic curve.

  9. A.
    Agree
    B.
    Disagree

  10. 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 minimum normal stress is


  11. The direct stress, across a principal plane, is known as principal stress.

  12. A.
    Yes
    B.
    No

  13. On one side of a neutral axis of a beam, there is a tensile stress and on the other side of the beam there is a compressive stress.

  14. A.
    Agree
    B.
    Disagree

  15. When a body is subjected to a direct tensile stress (σ), the maximum normal stress is equal to the direct tensile stress.

  16. A.
    Agree
    B.
    Disagree

  17. According to Euler's column theory, the crippling load for a column length (l) hinged at both ends, is