PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester Aerospace Engineering?
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ANE) (Sem.?6)
WIND TUNNEL TECHNIQUES
Subject Code : ANE-326
M.Code : 60535
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.
SECTION-A
1.
Write briefly :
a) Define a Wind Tunnel.
b) Name some special purpose wind tunnels.
c) Why there is a need of diffuser after test section of a wind tunnel?
d) What is the use of wire screens in a wind tunnel?
e) What are the different methods of speed measurement in a wind tunnel?
f) What are the non aeronautical uses of Wind Tunnels?
g) What is a wind tunnel balance?
h) What are the different boundary conditions in a wind tunnel?
i) How the flow quality can be enhanced?
j) Describe shadowgraph method.
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SECTION-B
2.
What is the difference between open and closed wind tunnel?
3.
Sketch a wind tunnel and label it.
4.
What is the purpose of hot wire anemometer? What are the different types?
5.
How a wind tunnel is calibrated?
6.
How can you measure lift & drag in a wind tunnel?
SECTION-C
7.
What do you mean by boundary and buoyancy corrections? Explain the method for
application of these corrections.
8.
Describe the various techniques for measurement of speed and pressure in a wind tunnel.
Explain laser velocimeter.
9.
a) What are the different types of wind tunnel balances? Describe any one.
b) Describe the use of wind tunnel in civil engineering.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 04 November 2019