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Civil Engineering :: Hydraulics

Hydraulics - Section 1
Hydraulics - Section 2
Hydraulics - Section 3
Hydraulics - Section 4
Hydraulics - Section 5
Hydraulics - Section 6
  1.  

    For maximum power transmission through a nozzle, (where hf is the head lost due to friction)
    2. A.

    hf = \(\frac { H } { 2 } \)
    B.

    hf = \(\frac { H } { 3 } \)
    C.

    hf = \(\frac { H } { 4 } \)
    D.

    hf = \(\frac { H } { 5 } \)

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  2. Mass density of liquid (ρ) is given by
    3. A.

    \(\rho\) = \(\frac { mass } { volume } \)
    B.

    \(\rho\) = \(\frac { metric slug } {m^2 } \)
    C.

    \(\rho\) = \(\frac { kg sec^3 } { m^4 } \)
    D.

    all the above.

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  3. 'Flow net' can be drawn only if the flow is
    4. A.

    turbulent
    B.

    rotational
    C.

    distortion
    D.

    none of these.

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  4. The flow in open channel is laminar if the Reynold number is

    5. A.

    less than 500
    B.

    more than 500
    C.

    1000
    D.

    none of these.

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  5. Centre of buoyancy is
    6. A.

    centroid of the floating body
    B.

    centroid of the fluid displaced
    C.

    centre of pressure of the displaced liquid
    D.
    none of these.

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  6. The intensity of pressure due to sudden closure of a valve of a pipe in which water flows with velocity v, is directly proportional to :

    7. A.

    square root of the bulk modulus of elasticity of water
    B.

    bulk modulus of elasticity of water
    C.

    specific weight of water
    D.

    none of these.

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  7. The initial difference between liquid levels of two identical cylindrical vessels having their area of cross-section A, is H. Flow time T from one vessel to another through an orifice having coefficient of discharge Cd and area a will be

    8. A.

    \(\frac { \sqrt{AH} } { c \partial^2\sqrt{2g} } \)
    B.

    \(\frac {A \sqrt{H} } { cd \partial^\sqrt{2g} } \)
    C.

    \(\frac {A H^2/2 } { cd \partial^\sqrt{2g} } \)
    D.

    \(\frac {A^1/2 H^3/2 } { cd \partial^\sqrt{2g} } \)

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  8. Total energy line is
    9. A.

    pressure head
    B.

    datum head
    C.

    kinetic head
    D.

    All the above.

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  9. For critical flow, the Froude number is :

    10. A.

    1.0
    B.

    less than 1.0
    C.

    more than 1.0
    D.

    2

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  10. A stepped notch is a combination of
    11. A.

    rectangular notches of different sizes
    B.

    triangular notches of different sizes
    C.

    rectangular and triangular notches
    D.

    all the above.

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