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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of dynamic viscosity in S.I. units is

N-m/s²
N-s/m²
Poise
Stoke

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Reynold's number
Mach number
Froude's number
Weber's number

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Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator normally consists of

A cylinder and a ram
Two cylinders, two rams and a storage device
A cylinder, a piston, storage tank and control valve
Two coaxial rams and two cylinders

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Hydraulics and Fluid Mechanics in ME
When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

0.855 a. √2gH
√2gH
0.5 a. √2gH
0.707 a. √2gH

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Hydraulics and Fluid Mechanics in ME
Choose the correct relationship

dynamicviscosity = kinematicviscosity x density
kinematicviscosity = dynamicviscosity x density
specific gravity = gravity x density
gravity = specific gravity x density

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Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

Compressible
None of these
Viscous
Incompressible

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