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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Reynold's number is the ratio of inertia force to

Pressure force
Gravity force
Viscous force
Elastic force

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Hydraulics and Fluid Mechanics in ME
The pitot tube is used to measure

dynamic pressure
velocity at stagnation point
static pressure
stagnation pressure

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Hydraulics and Fluid Mechanics in ME
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

Q = (2/3). Cd × a × h
Q = (Cd × a)/√(2gh)
Q = (3Cd × a)/√(2h)
Q = Cd × a × 2gh

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Hydraulics and Fluid Mechanics in ME
With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will

Decrease
Remain unchanged
Increase
Depend upon the characteristics of liquid

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Hydraulics and Fluid Mechanics in ME
The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will

remain unaffected
decrease
may increase or decrease depending on the characteristics of liquid
increase

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Hydraulics and Fluid Mechanics in ME
The Bernoulli's equation is based on the assumption that

No force except gravity acts on the fluid
The velocity of flow is uniform across any cross-section of the pipe
All of these
There is no loss of energy of the liquid flowing

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