Railways Technical Ability Internal Combustion Engine (ICE) Question Bank Internal Combustion Engine (ICE)

  • question_answer    If V is the jet velocity Vo is the Vehicle velocity, the propulsive efficiency of a rocket is given by:

    A) \[\frac{2\,\left( {{\text{V}}_{\text{0}}}\text{/}{{\text{V}}_{\text{1}}} \right)}{1+\left( \frac{{{V}_{0}}}{{{V}_{1}}} \right)}\]                       

    B) \[\frac{\left( {{\text{V}}_{\text{0}}}\text{/}{{\text{V}}_{\text{1}}} \right)}{1+{{\left( \frac{{{V}_{0}}}{{{V}_{1}}} \right)}^{2}}}\]

    C) \[\frac{{{V}_{0}}}{{{V}_{0}}+{{V}_{1}}}\]              

    D) \[\frac{{{V}_{1}}}{{{V}_{0}}+{{V}_{1}}}\]    

    Correct Answer: A


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