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Theory of Structures problems

  • 1. Pick up the incorrect statement from the following : The torsional resistance of a shaft is directly proportional to

  • Options
  • A. modulus of rigidity
  • B. angle of twist
  • C. reciprocal of the length of the shaft
  • D. moment of inertia of the shaft section.
    • Discuss
  • 2. The force in BF of the truss shown in given figure, is
    Civil Engineering Theory of Structures: The force in BF of the truss shown in given figure, is

  • Options
  • A. 4t tension
  • B. 4t compression
  • C. 4.5t tension
  • D. 4.5t compression
  • E. zero.
    • Discuss
  • 3. The ratio of the deflections of the free end of a cantilever due to an isolated load at l/3rd and 2/3rd of the span, is

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 4. A material may fail if

  • Options
  • A. maximum principal stress exceeds the direct stress ?0
  • B. maximum strain exceeds
  • C. maximum shear stress exceeds
  • D. total strain energy exceeds
  • E. all the above.
    • Discuss
  • 5. A material is said to be perfectly elastic if

  • Options
  • A. it regains its original shape on removal of the load
  • B. It regains its original shape partially on removal of the load
  • C. it does not regain its original shape at all
  • D. none of these.
    • Discuss
  • 6. In the truss shown in the given figure, the force in member BC is
    Civil Engineering Theory of Structures: In the truss shown in the given figure, the force in member BC is

  • Options
  • A. 100 t compressive
  • B. 100 t tensile
  • C. zero
  • D. indeterminate
    • Discuss
  • 7. Stress may be expressed in Newtons

  • Options
  • A. per millimetre square (N/mm2)
  • B. per centimetre square (N/cm2)
  • C. per metre square (N/m2)
  • D. none of these.
    • Discuss
  • 8. Pick up the correct statement from the following:

  • Options
  • A. The point of intersection of the bending axis with the cross section of the beam, is called shear centre
  • B. For I sections, the shear centre coincides with the centroid of the cross section of the beam
  • C. For channels, the shear centre does not concide its centroid
  • D. Bending loads should pass through the shear centre to avoid twisting
  • E. All the above.
    • Discuss
  • 9. The force in AD of the truss shown in given figure, is
    Civil Engineering Theory of Structures: The force in AD of the truss shown in given figure, is

  • Options
  • A. 4.0t compression
  • B. 3.0t compression
  • C. 0.5t compression
  • D. 0.5t tension
  • E. zero.
    • Discuss
  • 10. The radius of gyration of a section of area A and least moment of inertia I about the centroidal axis, is

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

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