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HPCET Reynolds Number — practice questions

Explore 2 free Reynolds Number questions in HPCET Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Reynolds Number questions and exercises with answers

Showing questions 1–2 of 2.

**Reynolds number** is used to distinguish:Read the answer and worked solution →A liquid flowing through a tube has Reynolds number $R_n = 500$. Its flow is:Read the answer and worked solution →

Worked practice questions

**Reynolds number** is used to distinguish:

  1. Heat from work
  2. Laminar (streamline) from turbulent flow
  3. Different liquids by density
  4. Static from dynamic friction
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Correct answer: B. Laminar (streamline) from turbulent flow

Reynolds number $R_n = \rho v d / \eta$ (dimensionless). $R_n < 1000$: laminar $1000 < R_n < 2000$: transitional $R_n > 2000$: turbulent flow.

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A liquid flowing through a tube has Reynolds number $R_n = 500$. Its flow is:

  1. Laminar (streamline)
  2. Turbulent
  3. Transitional
  4. Cannot be classified
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Correct answer: A. Laminar (streamline)

$R_n < 1000$: streamline/laminar flow. $1000 < R_n < 2000$: transitional. $R_n > 2000$: turbulent. At 500, well within laminar regime.

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