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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as

Narrow-crested weir
Submerged weir
Ogee weir
Broad-crested weir

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Reynolds number is

More than 4000
Between 2000 and 4000
Less than 4000
Less than 2000

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Hydraulics and Fluid Mechanics in ME
The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

Compressibility
Capillarity
Viscosity
Surface tension

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

Sixteen times
Eight times
Four times
Double

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Hydraulics and Fluid Mechanics in ME
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

wh
h
h/w
w/h

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Hydraulics and Fluid Mechanics in ME
Stoke is the unit of

Kinematic viscosity in M. K. S. units
Kinematic viscosity in C. G. S. units
Dynamic viscosity in M. K. S. units
Dynamic viscosity in S. I. units

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