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Mechanical Engineering :: Hydraulics and Fluid Mechanics

  1. The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

  2. A.

    equal to

    B.

    one-half

    C.

    three fourth

    D.

    double


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

  4. A.

    \(\frac { dQ } { Q } = \frac{3}{2} \times \frac {dH} {H}\)

    B.

    \(\frac { dQ } { Q } = 2 \times \frac {dH} {H}\)

    C.

    \(\frac { dQ } { Q } = \frac{5}{2} \times \frac {dH} {H}\)

    D.

    \(3 \times \frac {dH} {H}\)


  5. The separation of flow occurs when the hydrodynamic boundary layer thickness is reduced to zero.

  6. A.

    Agree

    B.

    Disagree


  7. If the depth of water in an open channel is less than the critical depth, the flow is called

  8. A.

    critical flow

    B.

    turbulent flow

    C.

    tranquil flow

    D.

    torrential flow


  9. A nozzle placed at the end of a water pipe line discharges water at a

  10. A.

    low pressure

    B.

    high pressure

    C.

    low velocity

    D.

    high velocity