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

  • question_answer The normal stress is the same in directions at a point in a fluid only when;

    A) The fluid is frictional

    B) The fluid is frictionless and incompressible

    C) The fluid has zero viscosity and is at rest

    D) One fluid layer has no motion relative to an adjacent layer.

    Correct Answer: B


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