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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The force present in a moving liquid is

All of these
Gravity force
Inertia force
Viscous force

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Hydraulics and Fluid Mechanics in ME
Ratio of inertia force to surface Jension is known as

Weber’s number
Mach number
Froude number
Reynold’s number

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the pressure varies

Square of fan speed
Square root of fan speed
Cube of fan speed
Directly as fan speed

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Hydraulics and Fluid Mechanics in ME
The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called

Specific gravity of liquid
Density of liquid
Surface tension of liquid
Compressibility of liquid

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Hydraulics and Fluid Mechanics in ME
The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is

[wa (V - v)]/2g
[wa (V - v)²]/2g
[wa (V - v)]/g
[wa (V - v²)]/g

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Hydraulics and Fluid Mechanics in ME
The tendency of a liquid surface to contract is due to the following property

viscosity
adhesion
surface tension
cohesion

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