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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

Mouthpiece
Notch
Nozzle
Weir

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Hydraulics and Fluid Mechanics in ME
Newton's law of viscosity is a relationship between

Shear stress and rate of shear strain
Rate of shear strain and temperature
Pressure, velocity and temperature
Shear stress and velocity

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Four times
Sixteen times
Eight times
Double

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Hydraulics and Fluid Mechanics in ME
The pressure of the liquid flowing through the divergent portion of a Venturimeter

Increases
Depends upon mass of liquid
Remains constant
Decreases

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

adhesion
surface tension
cohesion
viscosity

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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)

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

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