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

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

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Hydraulics and Fluid Mechanics in ME
In case of flow through parallel pipes,

Both (A) and (B)
The total discharge is equal to the sum of discharges in the various pipes
The total head loss is the sum of head losses in the various pipes
The head loss for all the pipes is same

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Hydraulics and Fluid Mechanics in ME
Coefficient of resistance is the ratio of

Actual velocity of jet at vena-contracta to the theoretical velocity
Loss of head in the orifice to the head of water available at the exit of the orifice
Area of jet at vena-contracta to the area of orifice
Actual discharge through an orifice to the theoretical discharge

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