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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of mass density in kgsecVm4 for water at 0°C is

1
1000
101.9
100

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kg-sec-V-m⁴ for water at 0°C is

100.9
101.9
1
1000

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Hydraulics and Fluid Mechanics in ME
A nozzle is generally made of

Convergent shape
Cylindrical shape
Convergent-divergent shape
Divergent shape

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Hydraulics and Fluid Mechanics in ME
The Newton's law of resistance is based on the assumption that the

Planes of the body are completely smooth
Space around the body is completely filled with the fluid
All of these
Fluid particles do not exert any influence on one another

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Hydraulics and Fluid Mechanics in ME
The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)

d = (D⁵/8fl)1/4
d = (D⁵/8fl)1/3
d = (D⁵/8fl)1/5
d = (D⁵/8fl)1/2

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Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Are equal in size and shape
Are identical in shape, but differ only in size
Have identical velocities
None of these

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