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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure at a point in a fluid will not be same in all the directions when the fluid is

viscous and moving.
inviscous and moving
viscous
moving

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Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is

π w ω² r²/2g
π w ω² r³/4g
π w ω² r⁴/4g
π w ω² r²/4g

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Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in meatcentric height will be

Higher
Lower
Lower/higher depending on weight of body
Same

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water , the horse power required will be

1.5 B.H.P
0.75 B.H.P
H.P./0.75
Same

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Hydraulics and Fluid Mechanics in ME
The Bernoulli's equation is based on the assumption that

All of these
There is no loss of energy of the liquid flowing
No force except gravity acts on the fluid
The velocity of flow is uniform across any cross-section of the pipe

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of gases
relative humidity
specific gravity of solids
specific gravity of liquids

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