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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/h
w
h/w
wh

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Hydraulics and Fluid Mechanics in ME
The product of mass and acceleration of flowing liquid is called

Viscous force
Pressure force
Inertia force
Gravity force

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Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Penstock
Blade inlet
Guide blade
Inlet of draft rube

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Hydraulics and Fluid Mechanics in ME
Principle of similitude forms the basis of

hydraulic designs
comparing similarity between design and actual equipment
comparing two identical equipments
designing models so that the result can be converted to prototypes

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Hydraulics and Fluid Mechanics in ME
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called

Vacuum pressure
Positive gauge pressure
Absolute pressure
Gauge pressure

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Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m3
N/m2
N-m
N/m

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