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Mechanical Engineering :: Hydraulics and Fluid Mechanics

Hydraulics and Fluid Mechanics - Section 1
Hydraulics and Fluid Mechanics - Section 2
Hydraulics and Fluid Mechanics - Section 3
Hydraulics and Fluid Mechanics - Section 4
Hydraulics and Fluid Mechanics - Section 5
Hydraulics and Fluid Mechanics - Section 6
Hydraulics and Fluid Mechanics - Section 7
Hydraulics and Fluid Mechanics - Section 8
Hydraulics and Fluid Mechanics - section-5

  1. The velocity corresponding to Reynold number of 2000 is called

    2. A.

    sub-sonic velocity
    B.

    super-sonic velocity
    C.

    lower critical velocity
    D.

    higher critical velocity

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  2. The specific weight of water in S.I. units is taken as

    3. A.

    9.81 kN/m3
    B.

    9.81 x 103 kN/m3
    C.

    9.81 x 10-6 N/mm3
    D.

    any one of these

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  3. The loss of head at exit of a pipe is

    4. A.

    \(\frac { v^2 } { 2g }\)
    B.

    \(\frac { 0.5 v^2 } { 2g }\)
    C.

    \(\frac { 0.375 v^2 } { 2g }\)
    D.

    \(\frac { 0.75 v^2 } { 2g }\)

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  4. The flow in a pipe is laminar, when Reynold number is less than 2000.

    5. A.

    True
    B.

    False

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  5. The power transmitted through the pipe is maximum when the head lost due to friction is equal to

    6. A.

    one-fourth of the total supply head
    B.

    one-third of the total supply head
    C.

    one-half of the total supply head
    D.

    two-third of the total supply head

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