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Hydraulics & Fluid Mechanics

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

Micro-manometer
ionisastion gauge
Pirani Gauge
Bourdon tube

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

boundary layer
wake
lift
drag

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Hydraulics & Fluid Mechanics
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

the weight of the body
less than the weight of the body
more than the weight of the body
weight of the fluid displaced by the body

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Hydraulics & Fluid Mechanics
Separation of flow occurs when

All of these
the cross-section of a channel is reduced
the boundary layer comes to rest
the pressure intensity reaches a minimum

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Hydraulics & Fluid Mechanics
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

force of adhesion
force of cohesion
force of friction
force of diffusion

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Hydraulics & Fluid Mechanics
Which of the following instrument can be used for measuring speed of an aeroplane

pitot tube
Orifice plate
rotameter
Venturimeter

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