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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of

A triangle
An ellipse
None of these
A paraboloid

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Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2000 is called

Lower critical velocity
Sub-sonic velocity
Super-sonic velocity
Higher critical velocity

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately

5 mm
20 mm
10 mm
30 mm

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Hydraulics and Fluid Mechanics in ME
In axial flow fans and turbines, fluid enters and leaves as follows

Axially, axially
Radially, axially
Radially, radially
Axially, radially

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Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid is the ratio of

Increase in volume to the viscosity of fluid
Shear stress to shear strain
Increase in pressure to the volumetric strain
Critical velocity to the viscosity of fluid

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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

Positive gauge pressure
Vacuum pressure
Gauge pressure
Absolute pressure

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