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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. A flow whose streamline is represented by a curve, is called

    2. A.

    one-dimensional flow
    B.

    two-dimensional flow
    C.

    three-dimensional flow
    D.

    four-dimensional flow

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  2. When the Mach number is less than unity, the flow is called

    3. A.

    sub-sonic flow
    B.

    sonic flow
    C.

    super-sonic flow
    D.

    hyper-sonic flow

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  3. When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero

    4. A.

    Agree
    B.

    Disagree

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  4. A flow is called hyper-sonic, if the Mach number is

    5. A.

    less than unity
    B.

    unity
    C.

    between 1 and 6
    D.

    none of these

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  5. The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

    6. A.

    \(\frac { \mu n^3 N^2 R^2 } { 1800 t }\)
    B.

    \(\frac { \mu n^3 N^2 R^4 } { 1800 t }\)
    C.

    \(\frac { \mu n^3 N^2 R^2 } { 3600 t }\)
    D.

    \(\frac { \mu n^3 N^2 R^4 } { 3600 t }\)

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