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Home ‣ Mechanical Engineering ‣ Strength of Materials Comments
  • Question

  • Factor of safety is defined as the ratio of


  • Options
  • A. ultimate stress to working stress
  • B. working stress to ultimate stress
  • C. breaking stress to ultimate stress
  • D. ultimate stress to breaking stress

  • Correct Answer
  • ultimate stress to working stress 

    • Strength of Materials problems

    Search Results

    • 1. The centre to centre distance, between two consecutive rivets in a row, is called

    • Options
    • A. margin
    • B. pitch
    • C. back pitch
    • D. diagonal pitch
      • Discuss
    • 2. Lame's theory is associated with

    • Options
    • A. thin cylindrical shells
    • B. thick cylindrical shells
    • C. direct and bending stresses
    • D. none of these
      • Discuss
    • 3. In the below figure, the point B represents upper yield point.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 4. If percentage elongation of a certain specimen made of a material 'A' under tensile test is 30% and the percentage elongation of a specimen with same dimensions made of another material 'B' is 40%, then material 'B' is more ductile than material 'A'.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 5. When a closely-coiied helical spring of mean diameter (D) is subjected to an axial load (W), the deflection of the spring (?) is given by (where d = Diameter of spring wire, n = No. of turns of the spring, and C = Modulus of rigidity for the spring material)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. The torsional rigidity of a shaft is expressed by the torque required to produce a twist of one radian per unit length of a shaft.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the

    • Options
    • A. top layer
    • B. bottom layer
    • C. neutral axis
    • D. every cross-section
      • Discuss
    • 8. For a given stress, the ratio of moment of resistance of a beam of square cross-section when placed with its two sides horizontal to the moment of resistance with its diagonal horizontal, is

    • Options
    • A. 1/2
    • B. 1
    • C. 1/2
    • D. 2
      • Discuss
    • 9. A fixed beam is one which is fixed at __________ of its ends.

    • Options
    • A. one
    • B. both
      • Discuss
    • 10. The relation between modulus of elasticity (E) and modulus of rigidity (C) is given by

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

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