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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Pressure of the order of 10''' torr can be measured by

Micro-manometer
Pirani Gauge
ionisastion gauge
Bourdon tube

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Hydraulics & Fluid Mechanics
In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is

33 M/SEC
50 M/SEC
22.5 M/SEC
40 M/SEC

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Hydraulics & Fluid Mechanics
An open vessel of water is accelerated up an inclined plane. The free water surface will

make an angle in opposite direction to inclination of inclined plane
be horizontal
any one of above is possible
make an angle in direction of inclination of inclined plane

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Hydraulics & Fluid Mechanics
For a floating body to be in equilibrium

meta center should be above e.g.
center of buoyancy and e.g. must lie on same vertical plane
a righting couple should be formed
All of these

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Hydraulics & Fluid Mechanics
The region between the separation streamline and the boundary surface of the solid body is known as

lift
boundary layer
drag
wake

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Hydraulics & Fluid Mechanics
The surface tension of mercury at normal temperature compared to that of water is

less
more or less depending on size of glass tube
more
same

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