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

  • question_answer If a prismatic bar be subjected to an axial tensile stress \[\sigma \] then shear stress induced on a plane inclined at \[\theta \] with the axis will be:

    A) \[\frac{\sigma }{2}\,\sin 2\theta \]            

    B) \[\frac{\sigma }{2}\,\cos 2\theta \]

    C) \[\frac{\sigma }{2}\,{{\cos }^{2}}\theta \]                     

    D) \[\frac{\sigma }{2}\,{{\sin }^{2}}\theta \]

    Correct Answer: A

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