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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The centre of gravity of the volume of the liquid displaced is called

Metacentre
Centre of buoyancy
None of the listed here
Centre of pressure

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Hydraulics and Fluid Mechanics in ME
The eddy viscosity for turbulent flow is

a function of temperature only
a physical property of the fluid.
independent of the flow
dependent on the flow

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Hydraulics and Fluid Mechanics in ME
Which of the following manometer has highest sensitivity

inclined U-tube
micro-manometer with water
U-tube with water
U-tube with mercury

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Hydraulics and Fluid Mechanics in ME
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

0.1
0.001
0.0001
0.01

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Hydraulics and Fluid Mechanics in ME
Euler’s dimensionless number relates the following

viscous force and inertial force
viscous force and buoyancy force
inertial force and gravity
pressure force and inertial force

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Hydraulics and Fluid Mechanics in ME
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

√2
43832
1
1/√2

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