Railways Technical Ability Turbomachinery Question Bank Turbomachinery

  • question_answer Consider the following statements regarding the axial flow in an air compressor :
    1.  Surging is a local phenomenon while stalling affects the entire compressor.
    2.  Stalling is a local phenomenon while surging affects the entire compressor.
    3. The pressure ratio of an axial compressor stage is smaller than that of a centrifugal compressor stage.
    Of these statements:

    A) 1, 2 and 3 are correct

    B) 1 and 2 are correct

    C) 2 and 3 are correct  

    D) 1 and 3 are correct.

    Correct Answer: D


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