Railways Technical Ability Metal Forming, Casting and Cutting Question Bank Metal Casting

  • question_answer                       For a water turbine, running at constant head and speed, the operating characteristics curves in the given figure show, that upto a certain discharge 'q' both output power and efficiency remain zero. The discharge 'q' is required to:               

    A) Overcome initial inertia                 

    B) Overcome initial friction               

    C) Keep the hydraulic circuit full             

    D) Keep the turbine running at no load 

    Correct Answer: D

    Solution :

    Discharge q is required in a water turbine to keep the turbine running at no load.


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