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A dimensionless indicator tells an engineer whether flow will be laminar or turbulent. It is the:
ANusselt number
BReynolds number
CMach number
DPrandtl number
Answer & Solution
Correct answer: B. Reynolds number
1. It combines speed, density, viscosity and size.
2. It predicts the flow regime.
3. It is the Reynolds number.
_Source: OpenStax University Physics Volume 1, Chapter 14, Fluid Mechanics._
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