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Fluid Mechanics

Fluid Mechanics
Ratio of inertial forces to surface tension forces is called the __________ number.

Mach
Weber
Froude
Euler

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Fluid Mechanics
Which of the following produces maximum pressure difference for transportation of gases?

Vaccum pumps
Blowers
Fans
Compressors

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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.

12.4
1.8
186.2
736.4

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Fluid Mechanics
In laminar flow through a round tube, the discharge varies

Linearly as the viscosity
Inversely as the viscosity
Inversely as the pressure drop
As the square of the radius

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Fluid Mechanics
The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is

HW/2(H + W)²
2HW/(H + W)²
√(HW/π)
HW/4(H + W)²

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Fluid Mechanics
Specific speed of a centrifugal pump relates it with another pump having the

Same speed
Dynamic similarity
Same efficiency
Geometrical similarity

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MORE MCQ ON Fluid Mechanics

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