Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 6th Semester (Sixth Semester) 2014-2015 Advanced Welding Technology Question Paper
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(Following Paper ID and Roll No. to be ?lled in your Answer Book)
PAPER ID : 140656
Roll No.
B. Tech. .
(SEM. VI) THEORY EXAMINATION,_ 2014-15
ADVANCED WELDING TECHNOLOGY
~Time : 2 Hours] - [Total Marks : 50
Note : (1) Attempt 'all quwtions.
(2) All questions carry equal marks.
(3) Be precise in your anmer.
1 Write short notes on any four parts of the ' 2x5=10
following:
(a) Soldering and brazing
(b) Selection of welding process.
(c) Schae?er and Maurer diagrhm
(d) Arc stability
(e) T16 and MIG welding
(1) Hard facing
(g) . Life prediction of weld design.
140656] 1 [Contd...
Attempt any two of the following : sz=lo
(8)
(b)
(6)
Explain ultrasonic welding process, its application,
advantages and disadvantages with the help of
neat sketch,
What is the principle beam generation ofLASER
and hence describe laser?beam welding 7
Explain with the suitable sketch the process of
plasma arc welding.
Attempt any two part5 of the following : 5xz=10
(a) _
(b)
(a)
(b)
140656]
For welding the parts of a ship which is ?oating
on a sea, which welding process will you prefer
and why ?2 Explain the process.
What do you understand by ?'iction welding ?
Where is it suitable ? Explain Its working pn'nciple
with the help of neat sketch
(c) Explain resiStance welding. Howspot welding
di?'ers ?'om projection welding ??
' Attempt any two parts of the following : 5xz=10
Mention the origin of different kinds of defects
in weld and suggest suitable remedial measures.
What is HAZ in welding ? Why micro alloyed
steels arebetterintheirHAZpropei'tiesthanplain
carbon steels ?
2 [ Contd...
(o)
Explain the effect of the follOwing on a welded
Joints :
(1) Alloying element
(11') Absorption of gases by weld
(iii) Slag inclusion
Attempt any one pan of the following : 10>
(b)
140656]
What are the various Thermal considerations for
welding ? Also discuss the variation of Heating
and curves.
Discuss in brief about the working principle of
Explosive welding and Spray welding, with their
applications.
. 3 [17075]
This post was last modified on 29 January 2020