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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For manometer, a better liquid combination is one having

lower surface tension
higher surface tension
surface tension is no criterion
high density and viscosity

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Hydraulics and Fluid Mechanics in ME
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

0.611 stoke
0.0116 stoke
0.116 stoke
0.0611 stoke

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Hydraulics and Fluid Mechanics in ME
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.

0.02
0.01
0.015
0.025

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Hydraulics and Fluid Mechanics in ME
The pressure at a point 4 m below the free surface of water is

29.24 kPa
39.24 kPa
19.24 kPa
49.24 kPa

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

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to obtain

Pumping of viscous fluids
High head and high discharge
High discharge
High head

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