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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

21000
10000
2100
2700

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant pressure, the speed capacity and power vary

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

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Hydraulics and Fluid Mechanics in ME
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

Falls on the back end
Remains horizontal
Becomes curved
Falls on the front end

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Hydraulics and Fluid Mechanics in ME
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is

248 r.p.m
82.4 r.p.m.
24.8 r.p.m.
48.2 r.p.m

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Hydraulics and Fluid Mechanics in ME
General energy equation holds for

turbulent flow
steady flow
laminar flow
non-uniform flow

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Hydraulics and Fluid Mechanics in ME
The ratio of absolute viscosity to mass density is known as

viscosity index
specific viscosity
coefficient of viscosity
kinematic viscosity

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