The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

8μvl/wd²

4μvl/wd²

32μvl/wd²

16μvl/wd²

8μvl/wd²

4μvl/wd²

32μvl/wd²

16μvl/wd²

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Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

0.5

0.515

0.5

0.4

0.5

0.515

0.5

0.4

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

N-s/m²

Stoke

Poise

N-m/s²

N-s/m²

Stoke

Poise

N-m/s²

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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 per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

wH2/2

wH2/3

wH/2

wH

wH2/2

wH2/3

wH/2

wH

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Hydraulics and Fluid Mechanics in ME
The conditions for the stable equilibrium of a floating body are

the meta-center should lie above the center of gravity

the center of buoyancy and the center of gravity must lie on the same vertical line

a righting couple should be formed

all the above are correct

the meta-center should lie above the center of gravity

the center of buoyancy and the center of gravity must lie on the same vertical line

a righting couple should be formed

all the above are correct

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Hydraulics and Fluid Mechanics in ME
A Francis turbine is used when the available head of water is

25 m to 250 m

0 to 25 m

None of these

Above 250 m

25 m to 250 m

0 to 25 m

None of these

Above 250 m

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

Hydraulics and Fluid Mechanics in ME A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

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

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 per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

Hydraulics and Fluid Mechanics in ME The conditions for the stable equilibrium of a floating body are

Hydraulics and Fluid Mechanics in ME A Francis turbine is used when the available head of water is

Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

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

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 per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

Hydraulics and Fluid Mechanics in ME
The conditions for the stable equilibrium of a floating body are

Hydraulics and Fluid Mechanics in ME
A Francis turbine is used when the available head of water is