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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 glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

    2. A.

    \(\frac { 4wd } { \sigma cos a }\)
    B.

    \(\frac { \sigma cos a } { 4wd } \)
    C.

    \(\frac {4 \sigma cos a } { wd } \)
    D.

    \(\frac { wd } { 4 \sigma cos a } \)

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  2. An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.

    3. A.

    less than twice
    B.

    more than twice
    C.

    less than three times
    D.

    more than three times

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  3. The volume of a fluid __________ as the pressure increases.

    4. A.

    remains same
    B.

    decreases
    C.

    increases

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  4. The pressure of the liquid flowing through the divergent portion of a venturimeter

    5. A.

    remains constant
    B.

    increases
    C.

    decreases
    D.

    depends upon mass of liquid

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  5. The vacuum pressure can be measured with the help of a piezometer tube.

    6. A.

    True
    B.

    False

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