Railways Technical Ability Turbomachinery Question Bank Turbomachinery

  • question_answer For a Parson's reaction turbine if a, and \[{{\alpha }_{2}}\] are fix angles at inlet and exit respectively and \[{{\beta }_{1}}\] and \[{{\beta }_{2}}\] are the moving blade angles at entrance and  respectively, then:                            

    A) \[{{\alpha }_{1}}={{\alpha }_{2}}\,\,and\,\,{{\beta }_{1}}={{\beta }_{2}}\]

    B) \[{{\alpha }_{1}}={{\alpha }_{1}}\,\,and\,\,{{\alpha }_{2}}={{\beta }_{2}}\]

    C) \[{{\alpha }_{1}}<{{\beta }_{1}}\,\,and\,\,{{\alpha }_{2}}={{\beta }_{2}}\]

    D) \[{{\alpha }_{1}}={{\beta }_{2}}\,\,and\,\,{{\beta }_{1}}={{\alpha }_{2}}\]

    Correct Answer: D

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