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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the viscous force is called

Euler's number
Froude's number
Reynold's number
Weber's number

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Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

remains below the centre of gravity
remains above the centre of gravity
coincides with the centre of gravity
coincides with the centroid of the volume of fluid displaced

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Hydraulics and Fluid Mechanics in ME
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

10 m/sec²
9.75 m/sec²
9 m/sec
9.81 m/sec²

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Hydraulics and Fluid Mechanics in ME
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

0.116 stoke
0.0611 stoke
0.611 stoke
0.0116 stoke

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Hydraulics and Fluid Mechanics in ME
Choose the correct relationship

kinematicviscosity = dynamicviscosity x density
gravity = specific gravity x density
dynamicviscosity = kinematicviscosity x density
specific gravity = gravity x density

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Hydraulics and Fluid Mechanics in ME
A structure used to dam up a stream or river over which the water flows is called

Dam
Notch
Weir
Orifice

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