Download GTU BE/B.Tech 2018 Winter 8th Sem New 2181927 Advance Welding Technology Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem New 2181927 Advance Welding Technology Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2181927 Date: 19/11/2018

Subject Name: Advance Welding Technology

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


Q.1 (a) Explain different welding positions with neat sketch 03
(b) Discuss the design consideration for welding. 04
(c) Briefly explain the effect of carbon and alloying elements on
weldability and microstructure.
07

Q.2 (a) Explain mode of solidification of weld metals. 03
(b) What is HAZ (Heat affected Zone)? How it affects the properties of
base metal.
04
(c) Discuss phase transformation in Fe- C diagrams with neat sketch 07
OR
(c) Write a short note on: ?TTT Diagram? 07
Q.3 (a) What is pre heating and interpass heating for weld joint? 03
(b) Explain types of flames for oxy-acetylene gas welding. 04
(c) Write a short note on : ?Plasma Arc Welding? 07
OR
Q.3 (a) Explain post heat treatment for weld joint. 03
(b) With neat sketch explain working principle of Spot welding. 04
(c) Discuss with neat sketch gas tungsten arc welding (GTAW) process,
state the advantages, limitations and applications.
07
Q.4 (a) State the advantages and limitations of thermit welding. 03
(b) With neat sketch discuss laser beam welding. 04
(c) What is solid state welding? Enlist solid state welding processes and
explain one of them.
07

OR
Q.4 (a) What is the difference among welding, brazing and soldering? 03
(b) With neat sketch explain electron beam welding 04
(c) Define resistance welding process and also state advantages,
disadvantages, & application of resistance welding process.
07
Q.5 (a) Write down steps involved in Dye Penetrate test. 03
(b) Explain ASME code for Boiler and Pressure Vessels. 04
(c) Enlist various non destructive testing methods and explain
Radiographic inspection method for weld joint.
07
OR

Q.5 (a) What is API standard and ASTM standard? 03
(b) Discuss spot examination of weld joint. 04
(c) Explain magnetic particle inspection method with neat sketch. 07

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