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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem

All of these
pitot tube
Venturimeter
Orifice plate

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

None of these
Stable equilibrium
Neutral equilibrium
Unstable equilibrium

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Hydraulics and Fluid Mechanics in ME
Geometric similarity is said to exist between the model and the prototype, if both of them

Have identical velocities
Are identical in shape, but differ only in size
Have identical forces
Are equal in size and shape

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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 rectangular notch is given by

dQ/Q = (3/2) × (dH/H)
dQ/Q = (1/2) × (dH/H)
dQ/Q = (dH/H)
dQ/Q = (3/4) × (dH/H)

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Hydraulics and Fluid Mechanics in ME
The property of a fluid which enables it to resist tensile stress is known as

surface tension
compressibility
adhesion
cohesion

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Hydraulics and Fluid Mechanics in ME
The force present in a moving liquid is

Gravity force
All of these
Inertia force
Viscous force

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