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Home Mechanical Engineering Strength of Materials Comments

  • Question
  • The stress developed in the material without any permanent set is called


  • Options
  • A. elastic limit
  • B. yield stress
  • C. ultimate stress
  • D. breaking stress

  • Correct Answer
  • elastic limit 


  • Strength of Materials problems


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    • 1. When a body is subjected to two equal and opposite pulls, as a result of which the body tends to extend its length, the stress and strain induced is

    • Options
    • A. compressive stress, tensile strain
    • B. tensile stress, compressive strain
    • C. tensile stress, tensile strain
    • D. compressive stress, compressive strain
    • Discuss
    • 2. If the modulus of elasticity for a given material is twice its modulus of rigidity, then bulk modulus is equal to

    • Options
    • A. 2C
    • B. 3C
    • C.
    • D.
    • Discuss
    • 3. For riveting, the size of hole drilled in plates is __________ shank diameter of rivet.

    • Options
    • A. equal to
    • B. less than
    • C. greater than
    • Discuss
    • 4. The shear force of 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 __________ at the fixed end.

    • Options
    • A. zero
    • B. wl/4
    • C. wl/2
    • D. wl
    • Discuss
    • 5. The springs in cars are used to store strain energy.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 6. Two shafts 'A' and 'B' are made of same material. The shaft 'A' is of diameter D and shaft 'B' is of diameter D/2. The strength of shaft 'B' is __________ as that of shaft 'A'

    • Options
    • A. one-eighth
    • B. one-fourth
    • C. one-half
    • D. four times
    • Discuss
    • 7. The Young's modulus of a material is 125 GPa and Poissons ratio is 0.25. The modulus of rigidity of me material is

    • Options
    • A. 30 GPa
    • B. 50 GPa
    • C. 80 GPa
    • D. 100 GPa
    • Discuss
    • 8. The unit of Young's modulus is same as that of stress.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. Every direct stress is always accompanied by a strain in its own direction and an opposite kind of strain in every direction, at right angles to it. Such a strain is known as

    • Options
    • A. linear strain
    • B. lateral strain
    • C. volumetric strain
    • D. shear strain
    • Discuss
    • 10. The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length is __________ at the fixed end.

    • Options
    • A. wl/4
    • B. wl/2
    • C. wl
    • D. wl2/2
    • Discuss


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