Prepare
Practice
Interview
Aptitude
Reasoning
English
GD
Placement papers
HR
Current affairs
Engineering
MCA
MBA
Online test
Login
Coefficient of friction for laminar flow - Fluid Mechanics
Home
>>
Category
>>
Mechanical Engineering (MCQ) questions and answers
>>
Fluid Mechanics
Q. Coefficient of friction for laminar flow is given as
Where,
Re = Reynold's number
- Published on 04 Aug 15
a.
(Re / 32)
b.
(32 / Re)
c.
(Re / 16)
d.
(16 / Re)
ANSWER: (16 / Re)
Related Content
Fluid Mechanics (
75
)
Manufacturing Processes - 1 (
75
)
Manufacturing Processes - 2 (
65
)
Material Science (
70
)
Theory of Machines - 1 (
60
)
Metrology and Quality Control (
151
)
Theory of Machines - 2 (
75
)
Heat Transfer (
271
)
Hydraulics & Pneumatics (
228
)
Thermodynamics (
388
)
Basic Mechanical Engineering (
91
)
Dynamics of Machinery (
92
)
Engineering Metallurgy (
61
)
Design of Machine Elements - 1 (
81
)
Mechatronics (
60
)
Turbo Machines (
70
)
Mechanical System Design (
73
)
Engineering Mechanics (
103
)
Strength of Materials (
110
)
Design of Machine Elements - 2 (
69
)
Discussion
Pankaj
-Posted on 29 Sep 15
•Hagen Poiseuille formula for head loss in viscous flow is,
h
f
= (32
u
μ L) / (ρ g D
2
)
•And head loss due to friction by Darcy Weisbach equation is,
h
f
= (4 f L V
2
) / (2 g D)
• Equating both the equations and V =
u
f = 16μ / ρVD
But Reynold's number Re = ρVD / μ
Therefore,
f = 16/Re
➨
Post your comment / Share knowledge
Required!
Required!
Invalid Email Id!
Required!
Enter the code shown above:
Please enter the code shown above
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)
MCQs
English
Tutorials
Download
▲
