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Hydraulics and Fluid Mechanics in ME

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

Nozzle
Mouthpiece
Weir
Notch

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Hydraulics and Fluid Mechanics in ME
The discharge through a siphon spillway is

Cd × a × √(2g) × H5/2
Cd × a × √(2g) × H2
Cd × a × √(2g) × H3/2
Cd × a × √(2gH)

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Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

Its density is less
It provides longer length for a given pressure difference
It provides suitable meniscus for the inclined tube
Its vapour pressure is low

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Hydraulics and Fluid Mechanics in ME
The Newton's law of resistance is based on the assumption that the

All of these
Space around the body is completely filled with the fluid
Planes of the body are completely smooth
Fluid particles do not exert any influence on one another

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Hydraulics and Fluid Mechanics in ME
Center of pressure compared to e.g. is

At same point
Above or below depending on area of body
Below it
Above it

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Hydraulics and Fluid Mechanics in ME
Cavitation is caused by

high pressure
high velocity
low pressure
weak material

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