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Fluid Mechanics

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

< 2
> 4
> 1
1

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Fluid Mechanics
Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition.

∂/∂t = constant
∂/∂s = 0
∂/∂t = constant
∂/∂t = 0

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Fluid Mechanics
Bernoull's equation does not apply to the functioning of a/an

Pitot tube
Venturimeter
Orificem
None of these

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Fluid Mechanics
The head loss in turbulent flow in a pipe varies

As (velocity)²
Inversely as the velocity
As velocity
Inversely as the square of diameter

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Fluid Mechanics
Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

70
1
40
10

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Fluid Mechanics
The unit of dynamic viscosity in SI unit is

kg/m . sec
m² /sec
m/N. sec
N/m²

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