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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)

None of the listed here
K/ρ
ρ/K
K.ρ

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Hydraulics and Fluid Mechanics in ME
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

Volumetric efficiency
Overall efficiency
Mechanical efficiency
Manometric efficiency

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Hydraulics and Fluid Mechanics in ME
If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

tend to move downward and it may finally sink
float
None of these
rise until its weight equals the buoyant force

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Hydraulics and Fluid Mechanics in ME
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 'θ'. Sensitivity of inclined tube to sensitivity of U-tube is equal to

1/Cosθ
Cos θ
1/Sinθ
Sinθ

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Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Takes place in one direction
Takes place in straight line
Takes place in curve
Is steady and uniform

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Hydraulics and Fluid Mechanics in ME
For centrifugal pump impeller, the maximum value of the vane exit angle is

25° to 30°
10° to 15°
20° to 25°
15° to 20°

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