The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

wx

wAx

wA/x

wA

wx

wAx

wA/x

wA

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Hydraulics and Fluid Mechanics in ME
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

None of these

Orifice

Weir

Notch

None of these

Orifice

Weir

Notch

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Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2800, is called

Higher critical velocity

Sub-sonic velocity

Super-sonic velocity

Lower critical velocity

Higher critical velocity

Sub-sonic velocity

Super-sonic velocity

Lower critical velocity

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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

Above

Below

At

None of these

Above

Below

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine with increase in unit speed

Remain unaffected

First increases and then decreases

Increases

Decreases

Remain unaffected

First increases and then decreases

Increases

Decreases

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Hydraulics and Fluid Mechanics in ME
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is

High speed with mixed flow at outlet

Slow speed with radial flow at outlet

High speed with radial flow at outlet

Medium speed with radial flow at outlet

High speed with mixed flow at outlet

Slow speed with radial flow at outlet

High speed with radial flow at outlet

Medium speed with radial flow at outlet

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

Hydraulics and Fluid Mechanics in ME An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

Hydraulics and Fluid Mechanics in ME The velocity corresponding to Reynold number of 2800, is called

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

Hydraulics and Fluid Mechanics in ME The discharge through a reaction turbine with increase in unit speed

Hydraulics and Fluid Mechanics in ME The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is

Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

Hydraulics and Fluid Mechanics in ME
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2800, is called

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

Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine with increase in unit speed

Hydraulics and Fluid Mechanics in ME
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is