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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem

Venturimeter
pitot tube
All of these
Orifice plate

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Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2000 is called

Sub-sonic velocity
Lower critical velocity
Super-sonic velocity
Higher critical velocity

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Hydraulics and Fluid Mechanics in ME
Kinematic viscosity is dependent upon

Distance
Flow
Pressure
Density

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Hydraulics and Fluid Mechanics in ME
The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow)

0.707 D
0.577 D
0.223 D
0.423 D

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Hydraulics and Fluid Mechanics in ME
Reynold's number is the ratio of the inertia force to the

Elastic force
Viscous force
Gravity force
Surface tension force

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Hydraulics and Fluid Mechanics in ME
Differential monometer is used to measure

difference of pressure between two points
very low pressure
atmospheric pressure
pressure in pipes, channels etc

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