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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
Notch
Weir

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

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is generally used to pump highly viscous fluid?

Reciprocating pump
Centrifugal pump
Screw pump
Air lift pump

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Hydraulics and Fluid Mechanics in ME
A nozzle is generally made of

Convergent shape
Divergent shape
Cylindrical shape
Convergent-divergent shape

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Hydraulics and Fluid Mechanics in ME
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)

(q/g)1/2
(q²/g)1/3
(q³/g)1/4
(q⁴/g)1/5

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Hydraulics and Fluid Mechanics in ME
The viscosity of a gas

is independent of pressure for very high pressure intensities
is independent of temperature
decreases with increase in temperature
increases with increase in temperature

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