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Home Mechanical Engineering Strength of Materials Comments

  • Question
  • A column is said to be a short column, when


  • Options
  • A. its length is very small
  • B. its cross-sectional area is small
  • C. the ratio of its length to the least radhis of gyration is less than 80.
  • D. the ratio of its length to the least radius of gyration is more than 80.

  • Correct Answer
  • the ratio of its length to the least radhis of gyration is less than 80. 


  • Strength of Materials problems


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    • 1. A bar of copper and steel form a composite system, which is heated to a temperature of 40°C. The stress induced in the copper bar will be

    • Options
    • A. tensile
    • B. compressive
    • C. shear
    • D. zero
    • Discuss
    • 2. Which of the following statement is wrong?

    • Options
    • A. The deformation of the bar per unit length in the direction of the force is called linear strain.
    • B. The Poisson's ratio is the ratio of lateral strain to the linear strain.
    • C. The ratio of change in volume to the original volume is called volumetric strain.
    • D. The bulk modulus is the ratio of linear stress to the linear strain.
    • Discuss
    • 3. The bending moment diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, will be

    • Options
    • A. a horizontal line
    • B. a vertical line
    • C. an inclined line
    • D. a parabolic curve
    • Discuss
    • 4. The load required to produce a unit deflection in a spring is called

    • Options
    • A. flexural rigidity
    • B. torsional rigidity
    • C. spring stiffness
    • D. Young's modulus
    • Discuss
    • 5. At the neutral axis of a beam

    • Options
    • A. the layers are subjected to maximum bending stress
    • B. the layers are subjected to minimum bending stress
    • C. the layers are subjected to compression
    • D. the layers do not undergo any strain
    • Discuss
    • 6. In a thick cylindrical shell subjected to an internal pressure (p), the tangential stress is always a tensile stress where as the radial stress is a compressive stress

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 7. Shear strength of the welded joint for double parallel fillet is (where ? = Allowable shear stress for weld metal)

    • Options
    • A. 0.5 s.l.?
    • B. s.l.?
    • C. 2 s.l.?
    • D. 2.s.l.?
    • Discuss
    • 8. The radius of the Mohr 's circle in the given figure is equal to

    • Options
    • 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
    • Discuss
    • 9. In a thick cylindrical shell subjected to an internal pressure (p), the radial stress across the thickness of the cylinder is

    • Options
    • 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 arid zero at the outer surface
    • Discuss
    • 10. When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under

    • Options
    • A. tensile stress
    • B. compressive stress
    • C. shear stress
    • D. bending stress
    • Discuss


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