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Strength of Materials problems

  • 1. While testing a cast iron beam (2.5 cm x 2.5 cm) in section and a metre long simply supported at the ends failed when a 100 kg weight is applied at the centre. The maximum stress induced is :

  • Options
  • A. 960 kg/cm2
  • B. 980 kg/cm2
  • C. 1000 kg/cm2
  • D. 1200 kg/cm2.
    • Discuss
  • 2. An arch may be subjected to

  • Options
  • A. shear and axial force
  • B. bending moment and shear force
  • C. bending moment and axial force
  • D. shear force and thrust
  • E. thrust, shear force and bending moment.
    • Discuss
  • 3. The number of points of contraflexure in a simple supported beam carrying uniformly distributed load, is

  • Options
  • A. 1
  • B. 2
  • C. 3
  • D. 0
    • Discuss
  • 4. n and j are numbers of members and joints in a frame. It contains redundant members if

  • Options
  • A. n = 2j - 3
  • B. n = 3j - 2
  • C. n < 2j - 3
  • D. n < j - 2
  • E. n > 2j - 3
    • Discuss
  • 5. The materials which have the same elastic properties in all directions, are called

  • Options
  • A. isotropic
  • B. brittle
  • C. homogeneous
  • D. hard.
    • Discuss
  • 6. According to Unwin's formula, the diameter d of a rivet of plate of thickness t is :

  • Options
  • A. d = 6.05 t
  • B. d = 1.5 t + 4
  • C. d = 5 t
  • D. d = t + 1.5
    • Discuss
  • 7. For structural analysis, Maxwell's reciprocal theorem can be applied to :

  • Options
  • A. plastic structures
  • B. elastic structures
  • C. symmetrical structures
  • D. all the above.
    • Discuss
  • 8. The B.M. of a cantilever beam shown in below figure at A, is
    Civil Engineering Strength of Materials: The B.M. of a cantilever beam shown in below figure at A, is

  • Options
  • A. zero
  • B. 8 Tm
  • C. 12 Tm
  • D. 20 Tm.
    • Discuss
  • 9. For a channel section, the shear centre lies at a distance of

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 10. Pick up the correct statement from the following :

  • Options
  • A. A ductile material has large plastic zone
  • B. A brittle material has no plastic zone
  • C. A rigid material has no plastic zone
  • D. All the above.
    • Discuss

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