If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

0.75 Q

Q/0.75

1.5 Q

Same quantity of liquid

0.75 Q

Q/0.75

1.5 Q

Same quantity of liquid

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Hydraulics and Fluid Mechanics in ME
All the terms of energy in Bernoulli’s equation have dimension of

work

energy

length

mass

work

energy

length

mass

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Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

does not exist

e.g. of floating body

center of pressure of displaced volume

centroid of the displaced volume of fluid

does not exist

e.g. of floating body

center of pressure of displaced volume

centroid of the displaced volume of fluid

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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)

32μvl/wd²

4μvl/wd²

16μvl/wd²

8μvl/wd²

32μvl/wd²

4μvl/wd²

16μvl/wd²

8μvl/wd²

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Hydraulics and Fluid Mechanics in ME
The flow ratio of Francis turbine is defined as the ratio of the

Velocity of runner at inlet to the velocity of flow at inlet

Velocity of flow at inlet to the theoretical jet velocity

None of these

Theoretical velocity of jet to the velocity of flow at inlet

Velocity of runner at inlet to the velocity of flow at inlet

Velocity of flow at inlet to the theoretical jet velocity

None of these

Theoretical velocity of jet to the velocity of flow at inlet

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Inversely proportional to (density)1/2 of fluid

Directly proportional to density of fluid

Inversely proportional to density of fluid

Directly proportional to (density)1/2 of fluid

Inversely proportional to (density)1/2 of fluid

Directly proportional to density of fluid

Inversely proportional to density of fluid

Directly proportional to (density)1/2 of fluid

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Hydraulics and Fluid Mechanics in ME All the terms of energy in Bernoulli’s equation have dimension of

Hydraulics and Fluid Mechanics in ME Center of buoyancy is the

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 The flow ratio of Francis turbine is defined as the ratio of the

Hydraulics and Fluid Mechanics in ME The pressure of fluid due to hammer blow is

Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Hydraulics and Fluid Mechanics in ME
All the terms of energy in Bernoulli’s equation have dimension of

Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

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
The flow ratio of Francis turbine is defined as the ratio of the

Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is