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Fluid Mechanics

Fluid Mechanics
The resistance wire used in a hot wire anemometer for conducting electrical current is made of

Tungsten
Aluminium
Chromium
Copper

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Fluid Mechanics
Scale up of agitator design requires

All of these
Dynamic similarity only
Geometrical similarity only
Both geometrical and dynamic similarity

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Fluid Mechanics
If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor).

Q = Q₁ + Q₂ + Q₃
V₁ = V₂ = V₃
Q₁ = Q₂ = Q₃
F = f₁ + f₂ + f₃

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Fluid Mechanics
The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.

736.4
12.4
186.2
1.8

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Fluid Mechanics
Euler's equation of motion is a statement expressing

Newton's second law of motion
Conservation of energy
Newton's first law of motion
Conservation of mass

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Fluid Mechanics
A piezometer opening measures the __________ fluid pressure.

Static
Total
Undisturbed
Dynamic

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