Railways Technical Ability Turbomachinery Question Bank Turbomachinery

  • question_answer The optimum intermediate pressure p, for a gas turbine plant operating between pressure limits \[{{p}_{1}}\] and \[{{p}_{2}}\] with perfect intercolling between the two stages of compression (with identical isentropic efficiency) is given by:

    A) \[{{p}_{1}}={{p}_{2}}-{{p}_{1}}\]                

    B) \[{{p}_{i}}={{p}_{i}}=\frac{1}{2}({{p}_{1}}+{{p}_{2}})\]

    C) \[{{p}_{i}}=\sqrt{{{p}_{1}}.{{p}_{2}}}\]                    

    D) \[{{p}_{i}}=\sqrt{p_{2}^{2}.p_{1}^{2}}\]

    Correct Answer: C

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