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

  • question_answer                   The state of plane stress in a plate of 100 mm thickness is given as
    \[{{\sigma }_{xx}}=100\,\text{N/m}{{\text{m}}^{\text{2}}}\text{,}\] \[{{\sigma }_{xy}}=200\,\text{N/m}{{\text{m}}^{\text{2}}}\]
    Young's modulus \[=300\,\text{N/m}{{\text{m}}^{\text{2}}}\]
    Poission?s ratio = 0.3
    The stress developed in the direction of thickness

    A) zero

    B) \[90\text{ }N/m{{m}^{2}}\]

    C) \[100\text{ }N/m{{m}^{2}}\]

    D) \[200\text{ }N/m{{m}^{2}}\]

    Correct Answer: B

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