My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
Download Model question papers & previous years question papers
|
Posted By: Sriram Member Level: Diamond Posted Date: 04 Sep 2008
|
2008 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech MECHANICS OF FLUIDS Set No. 1 Question paper
|
|
|
Code No: RR212101 Set No. 1
II B.Tech I Semester Supplimentary Examinations, February 2008
MECHANICS OF FLUIDS
(Aeronautical Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Write a note on viscosity and compressibility.
(b) Calculate the velocity gradient at distances of 0,10,15 cm from the boundary
if the velocity profile is a parabola given by u =Ay2 + By + C and with
the vertex 15cm from the boundary, where the velocity is 100 cm/sec. Also
calculate the shear stress at these points if the fluid has a viscosity of 8.2 poise.
[8+8]
2. (a) Derive the continuity equation for 3-D fluid flow.
(b) A fluid flow field is given by
V = xyi + 2yzj - (yz + z2)k
Determine whether this is a possible steady incompressible fluid flow. If so,
determine the valu of rotation at the point P (1,2,3). [8+8]
3. (a) What are the body forces considered in fluid flow problems?
(b) A 15-cm diameter pipe is reduced to 7.5 cm diameter through a gradual con-
traction. The difference between the piezometric heads at the main and con-
tracted section is 4 cm of mercury. By neglecting losses calculate the discharge
of water. [8+8]
4. (a) What is meant by smooth boundary and a rough boundary?
(b) Describe briefly the phenomenon of boundary layer separation.
(c) At what wind speed must a 127 mm diameter sphere travel through water to
have a drag of 5 N. [4+6+6]
5. (a) What is the difference between isotropic and adiabatic flow?
(b) A normal shock wave occurs in a diverging section when air is flowing at
velocity of 420 m/s ,pressure 100KN/m2 and temperature 100C . Determine
(i) Mach number before and after shock (ii) pressure rise and (ii) the velocity
and temperature after shock. [8+8]
6. (a) Enumerate the characteristics of laminar flow? Give examples where such a
flow is encountered.
(b) Oil of absolute viscosity 1.5 poise and relative density 0.85 flows through a 30
cm diameter pipe. If the headloss in 3000m length of pipe is 20m, estimate
the friction factor by assuming the flow to be laminar. [8+8]
7. (a) Explain different laws of fluid friction in detail?
1 of 2
Code No: RR212101 Set No. 1
(b) A siphon of diameter 20cm connects two reservoirs having a difference in
elevation of 20m. The length of the siphon is 500m and the summit is 3m
above the water level in the upper reservoir. The length of the pipe from
upper reservoir to the summit is 100m. Determine the discharge through the
siphon and also pressure at the summit by neglecting minor losses and taking
coefficient of friction as 0.005. [8+8]
8. (a) What is the purpose of a differential manometer, and what are the types of
differential manometers
(b) What are the devises to measure discharge in open channels. [8+8]
2 of 2
Return to question paper search
|
|
|
Submit Previous Years University Question Papers and make money from adsense revenue sharing program
Are you preparing for a university examination? Download model question papers
and practise before you write the exam.
|
Watch TV Channels
|