Home / Mechanical Engineering / Hydraulics and Fluid Mechanics in ME :: section-1

Mechanical Engineering :: Hydraulics and Fluid Mechanics in ME

  1. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

  2. A.

     dQ/Q = 3/2 × (dH/H)

    B.

     dQ/Q = 2 × (dH/H)

    C.

     dQ/Q = 5/2 × (dH/H)

    D.

     dQ/Q = 3 × (dH/H)

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by

  4. A.

     dQ/Q = (1/2) × (dH/H)

    B.

     dQ/Q = (3/4) × (dH/H)

    C.

     dQ/Q = (dH/H)

    D.

     dQ/Q = (3/2) × (dH/H)

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. According to Bernoulli's equation

  6. A.

     Z + p/w + v²/2g = constant

    B.

     Z + p/w - v²/2g = constant

    C.

     Z - p/w + v²/2g = constant

    D.

     Z - p/w - v²/2g = constant

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Which of the following instruments is used to measure flow on the application of Bernoulli's theorem?

  8. A.

     Venturimeter

    B.

     Orifice plate

    C.

     Nozzle

    D.

     All of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Ratio of inertia force to surface Jension is known as

  10. A.

     Mach number

    B.

     Froude number

    C.

     Reynolds’s number

    D.

     Weber’s number

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The ratio of absolute viscosity to mass density is known as

  12. A.

     Specific viscosity

    B.

     Viscosity index

    C.

     Kinematic viscosity

    D.

     Coefficient of viscosity

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. The velocity at which the flow changes from laminar flow to turbulent flow is called

  14. A.

     Critical velocity

    B.

     Velocity of approach

    C.

     Sub-sonic velocity

    D.

     Super-sonic velocity

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

  16. A.

     Cc × Cv

    B.

     Cc × Cr

    C.

     Cv × Cr

    D.

     Cc/Cr

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. An average value of coefficient of velocity is

  18. A.

     0.62

    B.

     0.76

    C.

     0.84

    D.

     0.97

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. A flow through an expanding tube at constant rate is called

  20. A.

     Steady uniform flow

    B.

     Steady non-uniform flow

    C.

     Unsteady uniform flow

    D.

     Unsteady non-uniform flow

    View Answer

    Workspace

    Discuss Discuss in Forum