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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

viscosity
surface tension forces
air resistance
atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

1
43832
√2
1/√2

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Hydraulics and Fluid Mechanics in ME
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

1/2 × sloping side
1/2 × breadth
1/4 × (depth + breadth)
1/2 × depth

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Hydraulics and Fluid Mechanics in ME
The motion of air mass in a tornado is a

forced vortex at center and free vortex outside
free vortex motion
forced vortex motion
free vortex at center and forced vortex outside

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

All of these
pitot tube
Orifice plate
Venturimeter

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Hydraulics and Fluid Mechanics in ME
The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as

One dimensional flow
Uniform flow
Turbulent flow
Steady flow

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