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Home Mechanical Engineering Strength of Materials Comments

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


  • Options
  • A. modulus of rigidity
  • B. bulk modulus
  • C. flexural rigidity
  • D. torsional rigidity

  • Correct Answer
  • flexural rigidity 


  • Strength of Materials problems


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    • 1. At the neutral axis of a beam, the shear stress is

    • Options
    • A. zero
    • B. minimum
    • C. maximum
    • D. infinity
    • Discuss
    • 2. The shear stress at the centre of a circular shaft under torsion is

    • Options
    • A. zero
    • B. minimum
    • C. maximum
    • D. infinity
    • Discuss
    • 3. A beam of triangular section is placed with its base horizontal. The maximum shear stress occurs at

    • Options
    • A. apex of the triangle
    • B. mid of the height
    • C. centre of gravity of the triangle
    • D. base of the triangle
    • Discuss
    • 4. The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

    • Options
    • A. 2/3
    • B. 3/4
    • C. 1
    • D. 9/8
    • Discuss
    • 5. The stiffness of a closely-coiled helical spring is __________ proportional to number of turns.

    • Options
    • A. directly
    • B. inversely
    • Discuss
    • 6. The actual neutral axis of a reinforced cement concrete beam is based on the principle that the moment of areas of compression and tension zones at the neutral axis are equal.

    • Options
    • A. Agree
    • B. Disagree
    • Discuss
    • 7. A column of length (l) with both ends fixed may be considered as equivalent to a column of length __________ with one end fixed and the other end free.

    • Options
    • A. l/8
    • B. l/4
    • C. l/2
    • D. l
    • Discuss
    • 8. If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. The buckling load for a given column depends upon

    • Options
    • A. area of cross-section of the column
    • B. length and least radius of gyration of the column
    • C. modulus of elasticity for the material of the column
    • D. all of the above
    • Discuss
    • 10. The hoop stress in a riveted cylindrical shell of diameter (d), thickness (t) and subjected to an internal pressure (p) is (where ? = Efficiency of the riveted joint)

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss


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