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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The viscosity of water at 20°C is

One stoke
One poise
One centipoise
One centistoke

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Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Mouthpiece
Notch
Weir
Nozzle

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant speed and capacity, the pressure and power vary

Inversely as square root of density
Directly as the air or gas density
Inversely as density
As square of density

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Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

always above the centre line of pipe
All of these
never above the energy grade line
always sloping downward in the direction of flow

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Hydraulics and Fluid Mechanics in ME
An air vessel is provided at the summit in a siphon to

Increase discharge
Avoid interruption in the flow
Increase velocity
Maintain pressure difference

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Hydraulics and Fluid Mechanics in ME
The ratio of absolute viscosity to mass density is known as

kinematic viscosity
coefficient of viscosity
specific viscosity
viscosity index

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