Railways Technical Ability Fluid Mechanics and Machinery Question Bank Fluid Mechanics

  • question_answer Consider the following statements:
    1. Gases are considered incompressible when Mach number is less than 0.2
    2. A Newtonian fluid is incompressible and non- viscous                               
    3. An ideal fluid has negligible surface tension   which of these statements (s) is/are correct?    

    A) 2 and 3            

    B) 2 alone           

    C) 1 alone             

    D) 1 and 3 

    Correct Answer: B

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