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Theory of Structures problems

  • 1. The eccentricity (e) of a hollow circular column, external diameter 25 cm, internal diameter 15 cm for an eccentric load 100 t for non-development of tension, is

  • Options
  • A. 2.75 cm
  • B. 3.00 cm
  • C. 3.50 cm
  • D. 4.25 cm
  • E. 5.0 cm
    • Discuss
  • 2. Maximum principal stress theory for the failure of a material at elastic point, is known

  • Options
  • A. Guest's or Trecas' theory
  • B. St. Venant's theory
  • C. Rankine's theory
  • D. Haig's theory
  • E. Von Mises's theory.
    • Discuss
  • 3. A steel plate d x b is sandwiched rigidly between two timber joists each D x B/2 in section. The moment of resistance of the beam for the same maximum permissible stress ? in timber and steel will be (where Young's modulus of steel is m times that of the timber).

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 4. A masonry dam (density = 20, 000 N/m3) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be

  • Options
  • A. 75 N/m2
  • B. 750 N/m2
  • C. 7500 N/m2
  • D. 75000 N/m2
    • Discuss
  • 5. Slenderness ratio of a long column, is

  • Options
  • A. area of cross-section divided by radius of gyration
  • B. area of cross-section divided by least radius of gyration
  • C. radius of gyration divided by area of cross-section
  • D. length of column divided by least radius of gyration.
    • Discuss
  • 6. The moment of inertia of a rectangular section of width B and depth D about an axis passing through C.G. and parallel to its width is

  • Options
  • A.
  • B.
  • C.
  • D.
  • E.
    • Discuss
  • 7. If normal stresses due to longitudinal and transverse loads on a bar are ?1 and ?2 respectively, the normal component of the stress on an inclined plane ?° to the longitudinal load, is

  • Options
  • A. ?1 sin ? x ?2 cos ?
  • B. ?1 sin ?2 + ?2 cos2 ?
  • C.
  • D.
    • Discuss
  • 8. The forces acting on the bar as shown in the given figure introduce
    Civil Engineering Theory of Structures: The forces acting on the bar as shown in the given figure introduce

  • Options
  • A. compressive stress
  • B. tensile stress
  • C. shear stress
  • D. none of these.
    • Discuss
  • 9. The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is

  • Options
  • A.
  • B.
  • C. 1
  • D. 2
  • E. 3
    • Discuss
  • 10. Civil Engineering Theory of Structures: is the equation of Eul is the equation of Euler's crippling load if

  • Options
  • A. both at the ends are fixed
  • B. both the ends are hinged
  • C. one end is fixed and other end is free
  • D. one end is fixed and other end is hinged.
    • Discuss

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