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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

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

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Hydraulics and Fluid Mechanics in ME
In a free nappe,

The pressure above the nappe is atmospheric
The pressure below the nappe is negative
The pressure below the nappe is atmospheric
The pressure above the nappe is negative

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

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

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Hydraulics and Fluid Mechanics in ME
The property by virtue of which a liquid opposes relative motion between its different layers is called

Viscosity
Osmosis
Surface tension
Coefficient of viscosity

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Hydraulics and Fluid Mechanics in ME
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between

Lift and drag
Drag and resultant force
Lift and tangential force
Lift and resultant force

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Hydraulics and Fluid Mechanics in ME
The working of which of the following hydraulic units is based on Pascal's law?

Hydraulic press
Jet pump
Hydraulic coupling
Air lift pump

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