Railways Technical Ability Turbomachinery Question Bank Turbomachinery

  • question_answer The suction pressure is 1 bar and delivery pressure is 125 bar. What is the ideal intermediate pressure at the end of first stage for a 3-stage air compressor?

    A) 25 bar              

    B) 5 bar

    C) 10 bar              

    D) 20 bar

    Correct Answer: B

    Solution :

    \[{{p}_{i}}={{\left( \frac{{{p}_{3}}}{{{p}_{1}}} \right)}^{1/3}}\] \[={{\left( \frac{125}{1} \right)}^{1/3}}=5\,\,\,bar\]

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