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Railways NTPC (Technical Ability) Engineering Mechanics and Strength of Materials Question Bank Strength of Materials

  • question_answer
    The number of strain readings (using strain gauges) needed on a plane surface to determine the principal strains and their direction is: 

    A) 1                                 

    B) 2

    C) 3                                 

    D) 4               

    Correct Answer: C

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