Civil Engineering (CE) Exam  >  Civil Engineering (CE) Questions  >  In a pipe of diameter 5 cm, water is flowing ... Start Learning for Free
In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?
  • a)
    Laminar flow
  • b)
    Transient flow
  • c)
    Turbulent flow
  • d)
    Cannot say
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If...
× 10^-3 Pa·s, calculate the Reynolds number for this flow.

Reynolds number (Re) is defined as the ratio of inertial forces to viscous forces in a fluid flow. It is given by the formula:

Re = (ρ * v * D) / μ

where:
ρ = density of the fluid = 1000 kg/m^3 (density of water)
v = velocity of the fluid = 0.08 m/s (converted from 8 cm/sec to m/s)
D = diameter of the pipe = 0.05 m (converted from 5 cm to m)
μ = dynamic viscosity of the fluid = 1.6 × 10^-3 Pa·s

Plugging in the values:

Re = (1000 * 0.08 * 0.05) / (1.6 × 10^-3)
Re = (40) / (1.6 × 10^-3)
Re = 25000

Therefore, the Reynolds number for this flow is 25000.
Free Test
Community Answer
In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If...
Reynold Number:
  • It is the ratio of inertia force to viscous force.
  • It determines the type of fluid flow.
The expression for Reynold's number is given as:

Where ρ = density of the fluid, V = mean velocity, D = diameter of the pipe, and μ = dynamic viscosity of the fluid.
  • The flow is laminar if Reynold number < 2000.
  • The flow is turbulent if Reynold number > 4000.
Given:
D = 5 cm = 5 × 10-2 m, V = 8 cm/sec = 0.08 m/sec, μ = 1.6 × 10-2 Pa-sec, ρ = 1000 kg/m3 

The flow is laminar as Reynold number < 2000.
Explore Courses for Civil Engineering (CE) exam

Top Courses for Civil Engineering (CE)

In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer?
Question Description
In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer?.
Solutions for In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE). Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free.
Here you can find the meaning of In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice In a pipe of diameter 5 cm, water is flowing at a rate of 8 cm/sec. If the dynamic viscosity of water is 1.6 × 10-2 Pa-s, what type of flow is present?a)Laminar flowb)Transient flowc)Turbulent flowd)Cannot sayCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
Explore Courses for Civil Engineering (CE) exam

Top Courses for Civil Engineering (CE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev