Flow in a circular pipe is generally considered laminar when the Reynolds number is:
Correct answer: B. Less than about 2,000
- A. Between about 2,000 and 4,000
- B. Less than about 2,000
- C. Greater than about 4,000
- D. Equal to the Froude number
Explanation
For flow in a circular pipe, Reynolds numbers below about 2,000 normally indicate laminar flow. The range from about 2,000 to 4,000 is transitional, while larger values usually indicate turbulent flow.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Hydraulics and Water Resources
Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
Practise Hydraulics and Water Resources
78 free Hydraulics and Water Resources MCQs from Civil Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Civil Engineering questions like this
Civil Engineering is on 3 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Hydraulics and Water Resources questions
In a hydraulic press, Pascal's law states that pressure applied to a confined fluid is transmitted:
The main purpose of a spillway at a storage dam is to:
In a gradually varied flow profile, the water depth changes:
When water passes through a sudden enlargement in a pipe, the resulting head loss is mainly caused by:
Which expression is used in the Manning equation for the discharge of a prismatic open channel?
Which hydraulic turbine is most suitable for a site with very high head and relatively low discharge?