Railways Technical Ability Engineering Mechanics and Strength of Materials Question Bank Strength of Materials

  • question_answer Maximum shear stress in a solid shaft of diameter D and length L twisted through an angle \[\theta \] is \[\tau \] A hollow shaft of same material and length having outside and inside diameters of D and D/2 respectively is also twisted through the same angle of twist \[\theta .\] The value of maximum shear stress in the hollow shaft will be.

    A) \[\frac{16}{15}\tau \]                

    B) \[\frac{8}{7}\tau \]

    C) \[\frac{4}{3}\tau \]                                

    D) \[\tau \]

    Correct Answer: B


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