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Home ‣ Mechanical Engineering ‣ Strength of Materials Comments
  • Question

  • If the section modulus of a beam is increased, the bending stress in the beam will


  • Options
  • A. not change
  • B. increase
  • C. decrease

  • Correct Answer
  • decrease 

    • Strength of Materials problems

    Search Results

    • 1. The torque transmitted by a hollow shaft of outer diameter (D) and inner diameter (d) is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. 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.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 3. A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is and lies at the centre of the beam.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum shear stress will be

    • Options
    • A. -100 MPa
    • B. 250 MPa
    • C. 300 MPa
    • D. 400 MPa
      • Discuss
    • 5. 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
    • 6. Two closely-coiled helical springs 'A' and 'B' of the same matenal, same number of turns and made from same wire are subjected to an axial load W. The mean diameter of spring 'A' is double the mean diameter of spring 'B'. The ratio of deflections in spring 'B' to spring 'A' will be

    • Options
    • A. 1/8
    • B. 1/4
    • C. 2
    • D. 4
      • Discuss
    • 7. When a rectangular bar of length l, breadth b and thickness t is subjected to an axial pull of P, then linear strain (?) is given by (where E = Modulus of elasticity)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. The thermal stress __________ upon the cross-sectional area of the bar.

    • Options
    • A. depends
    • B. does not depend
      • Discuss
    • 9. For the beam shown in the below figure, the shear force diagram between A and B is

    • Options
    • A. a horizontal line
    • B. a vertical line
    • C. an inclined line
    • D. a parabolic curve
      • Discuss
    • 10. The line of intersection of the neutral layer with any normal cross-section of the beam is called neutral axis.

    • Options
    • A. True
    • B. False
      • Discuss

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