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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The velocity at which the flow changes from laminar flow to turbulent flow is called

Super-sonic velocity
Sub-sonic velocity
Critical velocity
Velocity of approach

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Hydraulics and Fluid Mechanics in ME
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)

(1 - cos φ)/2
(1 - sin φ)/2
(1 + cos φ)/2
(1 + sin φ)/2

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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

Cos θ
1/Cosθ
Sinθ
1/Sinθ

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Hydraulics and Fluid Mechanics in ME
A Piezometer tube is used only for measuring

Moderate pressure
Low pressure
High pressure
Vacuum pressure

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Hydraulics and Fluid Mechanics in ME
Property of a fluid by which its own molecules are attracted is called

viscosity
cohesion
adhesion
compressibility

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Hydraulics and Fluid Mechanics in ME
A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is

8.29 kN
9.28 kN
28.9 kN
2.89 kN

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