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Fluid Mechanics

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

40
70
1
10

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Fluid Mechanics
Which of the following is not a dimension-less parameter?

Specific gravity
Fanning friction factor
None of these
Euler number

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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)

x
x/2
πx
2x

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Fluid Mechanics
Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases.

NPSH required
All of these
Head of the liquid pumped
BHP required by the pump

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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

100
2000
1000
10

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

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

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