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

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

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Hydraulics and Fluid Mechanics in ME
Reynolds number is significant in

All of these
supersonics, as with projectile and jet propulsion
simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

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