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  • Question

  • If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t attains maximum shear stress fs the ratio of inner diameter to outer diameter, is If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t atta


  • Options
  • A. If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t atta
  • B. If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t atta
  • C. If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t atta
  • D. If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t atta

  • Correct Answer
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    • Theory of Structures problems

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    • 1. The force in BC of the truss shown in the given figure, is

    • Options
    • A. 3.0t compression
    • B. 3.0t tension
    • C. t tension
    • D. t compression
    • E. None of these.
      • Discuss
    • 2. The equivalent length of a column of length L having one end fixed and the other end free, is

    • Options
    • A. 2L
    • B. L
    • C.
    • D.
      • Discuss
    • 3. A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. The ratio of maximum and average shear stresses on a rectangular section, is

    • Options
    • A. 1
    • B. 1.25
    • C. 1.5
    • D. 2.0
    • E. 2.5
      • Discuss
    • 5. A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. The moment of inertia of a circular section about any diameter D, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. A simply supported beam A carries a point load at its midspan. An other identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. The load on a spring per unit deflection, is called

    • Options
    • A. stiffness
    • B. proof resilience
    • C. proof stress
    • D. proof load.
      • Discuss
    • 9. Ab and Ac are the cross sections of bronze and copper bars of equal length, ?b, ?c are their respective stresses due to load P. If Pb and Pc are the loads shared by them, (where Eb and Ec are their modulii).

    • Options
    • A.
    • B. P = Pb + Pc
    • C. P = Ab ?b + Ac ?b
    • D. all the above
      • Discuss
    • 10. In a shaft, the shear stress is not directly proportional to

    • Options
    • A. radius of the shaft
    • B. angle of twist
    • C. length of the shaft
    • D. modulus of rigidity.
      • Discuss

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