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Railways NTPC (Technical Ability) Theory of Machines and Machine Design Question Bank Theory of Machines

  • question_answer
    An isentropic nozzle is discharging steam through critical pressure ratio. If the back pressure is further decreased, the discharge will:

    A) Decrease

    B) Increase

    C) Remain unaffected

    D) Come to a dead stop due to shock waves

    Correct Answer: C

    Solution :

    If the back pressure in an isentropic nozzle discharging steam through critical pressure ratio is further decreased, the discharge will remain unaffected.


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