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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Liquids

Cannot be compressed
None of the listed here
Are not affected by change in pressure and temperature
Occupy definite volume

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Hydraulics and Fluid Mechanics in ME
The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is __________ of the total supply head.

None of these
One-third
Two-third
One-half

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Hydraulics and Fluid Mechanics in ME
A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called

Uniform flow
Turbulent flow
Streamline flow
Steady flow

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Hydraulics and Fluid Mechanics in ME
Euler's equation in the differential form for the motion of liquids is given by

ρ.dp + g.dz + v.dv = 0
dp/ρ - g.dz + v.dv = 0
dp/ρ + g.dz + v.dv = 0
ρ.dp - g.dz + v.dv = 0

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

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

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Hydraulics and Fluid Mechanics in ME
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be

1500 kg
2000 kg
500 kg
1000 kg

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