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

  • question_answer          Match List-I with List-II and select the correct answer using the codes given below the lists:
    List-I (End conditions of columns) List-II (Lowest critical load)
    A. Column with both ends hinged 1. \[({{\pi }^{2}}El)/{{L}^{2}}\]
    B. Column with both ends fixed 2. \[(2{{\pi }^{2}}El)/{{L}^{2}}\]
    C. Column with one end fixed and the other end hinged 3. \[({{\pi }^{2}}El)/{{L}^{2}}\]
    D. Column with one end fixed and the other end free       4. \[({{\pi }^{2}}El)/4{{L}^{2}}\]
    (E is the young's modulus of elasticity of column material, L is the length and I is the second moment of area of cross-section of the column).      Codes:  

    A) A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4

    B) A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4

    C) A\[\to \]1, B\[\to \]3, C\[\to \]2, D\[\to \]4

    D) A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1  

    Correct Answer: C

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