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

wA

wA/x

wAx

wx

wA

wA/x

wAx

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Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

atmospheric pressure

air resistance

surface tension forces

viscosity

atmospheric pressure

air resistance

surface tension forces

viscosity

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Hydraulics and Fluid Mechanics in ME
The highest efficiency is obtained with a channel of __________ section.

Circular

Square

Trapezoidal

Rectangular

Circular

Square

Trapezoidal

Rectangular

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Hydraulics and Fluid Mechanics in ME
A streamline is defined as the line

parallel to central axis flow

along which the pressure drop is uniform

parallel to outer surface of pipe

of equal yelocity in a flow

parallel to central axis flow

along which the pressure drop is uniform

parallel to outer surface of pipe

of equal yelocity in a flow

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

dQ/Q = 3 × (dH/H)

dQ/Q = 3/2 × (dH/H)

dQ/Q = 2 × (dH/H)

dQ/Q = 5/2 × (dH/H)

dQ/Q = 3 × (dH/H)

dQ/Q = 3/2 × (dH/H)

dQ/Q = 2 × (dH/H)

dQ/Q = 5/2 × (dH/H)

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

H/3

3H/4

H/2

2H/3

H/3

3H/4

H/2

2H/3

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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 Rain drops are spherical because of

Hydraulics and Fluid Mechanics in ME The highest efficiency is obtained with a channel of __________ section.

Hydraulics and Fluid Mechanics in ME A streamline is defined as the line

Hydraulics and Fluid Mechanics in ME The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

Hydraulics and Fluid Mechanics in ME A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ 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)

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

Hydraulics and Fluid Mechanics in ME
The highest efficiency is obtained with a channel of __________ section.

Hydraulics and Fluid Mechanics in ME
A streamline is defined as the line

Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.