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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)

w
wh
h/w
w/h

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Hydraulics and Fluid Mechanics in ME
Density of water is maximum at

0°K
100°C
0°C
4°C

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Hydraulics and Fluid Mechanics in ME
The centre of pressure acts __________ the centre of gravity of immersed surface.

At
None of these
Below
Above

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Hydraulics and Fluid Mechanics in ME
A large Reynold number is indication of

Laminar flow
Steady flow
Highly turbulent flow
Smooth and streamline flow

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kgsecVm4 for water at 0°C is

1
100
101.9
1000

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Hydraulics and Fluid Mechanics in ME
The runaway speed of a hydraulic turbine is the speed

At which the turbine will run freely without load
At full load
Corresponding to maximum overload permissible
At which there will be no damage to the runner

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