Railways NTPC (Technical Ability) Automobile Engineering Question Bank Automobile Engineering

  • question_answer
    Witch one of the following numbers represents the ratio of kinematic viscosity to the thermal diftusivity?

    A) Grashoff number

    B) Prandtl number

    C) Mach number    

    D) Nusselt number.

    Correct Answer: B

    Solution :

    Pradtl number, Pr \[=\,\,\frac{Kinetic\,\,vis\cos ity}{Thermal\,\,diffusivity}\]


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