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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When the Mach number is more than 6, the flow is called

Super-sonic flow
Sonic flow
Sub-sonic flow
Hyper-sonic flow

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Hydraulics and Fluid Mechanics in ME
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

e > m > d
d > m > e
d > e > m
e > d > m

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Hydraulics and Fluid Mechanics in ME
In a forced vortex, the velocity of flow everywhere within the fluid is

non-zero finite
zero
minimum
maximum

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Hydraulics and Fluid Mechanics in ME
The coefficient of viscosity may be determined by

All of these
Capillary tube method
Orifice type viscometer
Rotating cylinder method

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Hydraulics and Fluid Mechanics in ME
The buoyancy depends upon the

Weight of the liquid displaced
Pressure with which the liquid is displaced
Compressibility of the liquid
Viscosity of the liquid

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Hydraulics and Fluid Mechanics in ME
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is

V1² / (V1² - V2²)
(V­1² - V2²) / V1²
(V­1 - V2) / V1
V1 / (V1 - V2)

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