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Railways NTPC (Technical Ability) Metal Forming, Casting and Cutting Question Bank Metal Forming

  • question_answer
    In the figure shown below, air is contained in the pipe and water is the manometer liquid. The pressure A is approximately:

    A) 10.14 m of water absolute

    B) 0.2 m of water

    C) 1.2 of water vacuum

    D) 4901 Pa

    Correct Answer: D

    Solution :

    Neglecting static head due to air,   \[{{P}_{A}}=\rho g{{h}_{w}}={{10}^{3}}\times 9.81\times 500\times {{10}^{-\,3}}\] =4905 Pa = 4901 Pa


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