Railways Technical Ability Turbomachinery Question Bank Turbomachinery

  • question_answer A four-stage compressor with perfect intercooling between stages compresses air from 1 bar to 16 bar. The optimum pressure in the last intercooler will be:

    A) 6 bar                

    B) 8 bar

    C) 10 bar              

    D) 12 bar

    Correct Answer: B

    Solution :

    Optimum pressure in the last intercooler \[=\,\,{{\left( \frac{{{p}_{s}}}{{{P}_{1}}} \right)}^{3/4}}\,\,{{(16)}^{3/4}}=8\,\,bar\]


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