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  • Question

  • The radius of gyration of a rectangular section is not proportional to


  • Options
  • A. square root of the moment of inertia
  • B. square root of the inverse of the area
  • C. square root of the moment of inertia divided by area of the section
  • D. none of these.

  • Correct Answer
  • none of these. 

    • Strength of Materials problems

    Search Results

    • 1. A simply supported beam of span L carries a concentrated load W at its mid-span. The maximum bending moment M is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss
    • 2. As compared to uniaxial tension or compression, the strain energy stored in bending is only

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. A triangular section having base b, height h, is placed with its base horizontal. If the shear stress at a depth y from top is q, the maximum shear stress is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2. The value of Poisson's ratio is

    • Options
    • A. 0.15
    • B. 0.20
    • C. 0.25
    • D. 0.30
    • E. 0.40
      • Discuss
    • 5. For a simply supported beam with a central load, the bending moment is

    • Options
    • A. least at the centre
    • B. least at the supports
    • C. maximum at the supports
    • D. maximum at the centre.
      • Discuss
    • 6. A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10, 000 kg, the corresponding maximum shearing stress being 30 kg/cm2. The depth of the beam is

    • Options
    • A. 15 cm
    • B. 20 cm
    • C. 25 cm
    • D. 30 cm.
      • Discuss
    • 7. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the stress developed in the helical spring is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. The shear stress at any section of a shaft is maximum

    • Options
    • A. at the centre of the section
    • B. at a distance r/2 from the centre
    • C. at the top of the surface
    • D. at a distance 3/4 r from the centre
    • E. none of these.
      • Discuss
    • 9. The shape of the bending moment diagram over the length of a beam, carrying a uniformly distributed load is always

    • Options
    • A. linear
    • B. parabolic
    • C. cubical
    • D. circular.
      • Discuss
    • 10. If the rivets in adjacent rows are staggered and outermost row has only one rivet, the arrangement of the rivets, is called

    • Options
    • A. chain riveting
    • B. zig-zag riveting
    • C. diamond riveting
    • D. none of these.
      • Discuss

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