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Fluid Mechanics

Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

10
100
1000
2000

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Fluid Mechanics
Pressure gradient in the pipe flow is influenced by the

All of these
Density & viscosity of the fluid
Diameter of pipe
Velocity of the fluid

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Fluid Mechanics
Velocity distribution for flow between two fixed parallel plates

Is constant over the entire cross-section
None of these
Varies parabolically across the section
Is zero at the plates and increases linearly to the midplane

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Fluid Mechanics
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

0.01πgH/8
4πg/3
0.04πgH/3
0.01πgH/4

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Fluid Mechanics
In power law, ζ = A (du/dy)² + B , then the fluid is

Rheopectic
Dilatant
Thixotropic
Newtonian

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Fluid Mechanics
The Mach number for hypersonic flow of compressible fluid is

> 4
1
< 2
> 1

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MORE MCQ ON Fluid Mechanics

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