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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Bernoulli equation deals with the law of conservation of

momentum
work
energy
mass

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Hydraulics and Fluid Mechanics in ME
The wake

always occurs before a separation point
always occurs after a separation point
None of these
is a region of high pressure intensity

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the gases with rise in temperature

unpredictable
decreases
increases
remains unaffected

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Hydraulics and Fluid Mechanics in ME
For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is

a function of Reynolds number and relative roughness
dependent only on Reynolds number
constant
dependent on relative roughness only

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Hydraulics and Fluid Mechanics in ME
The two important forces for a floating body are

buoyancy, inertial
inertial, gravity
buoyancy, pressure
buoyancy, gravity

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Hydraulics and Fluid Mechanics in ME
A Francis turbine is used when the available head of water is

25 m to 250 m
Above 250 m
None of these
0 to 25 m

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