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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

2700
10000
2100
21000

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Stable
Unstable
None of these
Neutral

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Hydraulics and Fluid Mechanics in ME
If the surface of liquid is convex, men

Cohesion pressure is increased
There is no cohesion pressure
Cohesion pressure is negligible
Cohesion pressure is decreased

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Eight times
Four times
Double
Sixteen times

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Hydraulics and Fluid Mechanics in ME
The speed of a pressure wave through a pipe depends upon

the bulk modulus for the fluid
the original head
the length of pipe
the viscosity of fluid

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Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

0.4
0.5
0.515
0.5

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