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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The number of buckets on the periphery of a Pelton wheel is given by

(D/2d) + 20
(D/2d) + 15
(D/2d) + 10
(D/2d) + 5

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Hydraulics and Fluid Mechanics in ME
The property of fluid by virtue of which it offers resistance to shear is called

adhesion
surface tension
cohesion
viscosity

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Hydraulics and Fluid Mechanics in ME
The magnitude of water hammer depends upon the

All of these
Speed at which the valve is closed
Elastic properties of the pipe material
Elastic properties of the liquid flowing through the pipe

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece is

0.5
0.707
0.855
0.375

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Hydraulics and Fluid Mechanics in ME
The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is

(waV²/2g) × sin 2θ
(waV/2g) × sin θ
(waV/g) × sin θ
(waV²/g) × sin θ

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Hydraulics and Fluid Mechanics in ME
The intensity of pressure on an immersed surface __________ with the increase in depth.

Does not change
Decreases
Increases
None of these

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