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Fluid Mechanics

Fluid Mechanics
N²Re/NFr is called the __________ number.

Brinkman
Euler
Galileo
Archimedes

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Fluid Mechanics
For water, when the pressure increases, the viscosity

Decreases
First decreases, and then increases
Also increases
Remains constant

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Fluid Mechanics
In frictional fluid flow, the quantity, P/ρ + V²/2gc + gz/gc, is

Not constant along a streamline
Constant along a streamline
Increased in the direction of flow
None of these

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Fluid Mechanics
The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by(where, x = each side of the square duct)

2x
πx
x
x/2

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Fluid Mechanics
The simple pitot tube measures the __________ pressure.

Total
None of these
Static
Dynamic

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Fluid Mechanics
Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.)

√d
d2
d1/3
d2/3

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MORE MCQ ON Fluid Mechanics

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