GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
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Subject Code:2162506 Date:16/11/2018Subject Name:Metal Joining Technology
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
MARKS | ||
Q.1 (a) | Define “Welding Process” | 03 |
(b) | Difference between Riveting Joint and Welding Joint | 04 |
(c) | Classify the welding Processes | 07 |
Q.2 (a) | Define Gas Welding processes | 03 |
(b) | Enlist different types of flames produced by gas welding. | 04 |
(c) | Explain rightward and leftward technique with neat sketch. | 07 |
OR | ||
(c) | Explain various equipment used in gas welding. | 07 |
Q.3 (a) | Define Arc Welding Process | 03 |
(b) | Explain Direct current straight polarity (DCSP) and Direct current Reverse polarity (DCRP). | 04 |
(c) | Explain the Tungsten Inert gas welding with neat sketch, advantages, limitations and applications. | 07 |
OR | ||
Q.3 (a) | Define Submerged Arc Welding (SAW) | 03 |
(b) | Enlist different types of electrodes used in welding processes | 04 |
(c) | Difference between TIG and MIG. | 07 |
Q.4 (a) | Define Resistance Welding Process | 03 |
(b) | Explain the role of Inert gas in welding processes. | 04 |
(c) | Explain Spot Welding process with neat sketch, advantages, limitations and applications. | 07 |
OR | ||
Q.4 (a) | Explain the limitation of Carbon Arc welding | 03 |
(b) | Explain the role of Filler rod in welding processes. | 04 |
(c) | Explain Seam Welding process with neat sketch, advantages, limitations and applications. | 07 |
Q.5 (a) | Enlist different types of solid- state welding processes. | 03 |
(b) | Explain Pre welding processes. | 04 |
(c) | Explain Thermit Welding with neat sketch, advantages, and applications. | 07 |
OR | ||
Q.5 (a) | Difference between destructive and non-destructive testing | 03 |
(b) | Explain Post welding processes. | 04 |
(c) | Enlist different types of NDT explain any one of them with neat sketch. | 07 |
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