GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
Seat No.: Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
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E - SEMESTER-V (OLD) EXAMINATION - WINTER 2018
Subject Code:151901 Date: 27/11/2018
Subject Name: Manufacturing Processes - I1
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) What is pattern? State the purpose of pattern. Name various factors which are considered for selection of pattern material. | 07 |
| (b) Define and Discuss: Fusion zone and Heat affected zone | 07 | |
| Q.2 | (a) Describe forge welding process in detail. | 07 |
| (b) Explain steps involved in investment casting with its advantages and limitations. | 07 | |
| OR | ||
| (a) Explain: Straight polarity and reverse polarity. Explain also effect of polarity on weld quality. | 07 | |
| (b) Why oxy-acetylene flame cannot be used inside of pipes or structures subjected to oxygen depletion? | 07 | |
| Q.3 | (a) Describe shell moulding process. | 07 |
| OR | ||
| (b) Explain theory of rolling with neat sketch and also explain forces involved in hot rolling | 07 | |
| Q.4 | (a) Explain: Drop forging and press-forging. | 07 |
| (b) Distinguish between wire drawing and tube drawing in detail. | 07 | |
| Q.5 | (a) Explain: Metal spinning with its advantages and application | 07 |
| OR | ||
| (b) Explain different shearing operations | 07 | |
| (a) Explain: (i) Ingot (ii) Bloom (iii) Slab (iv) Billet | 07 | |
| (b) What do you understand by ‘Roll Piercing’? Explain with a simple sketch. List advantages of the same | 07 | |
| (a) Discuss: (i) Barrel tumbling (ii) Burnishing (iii) Buffing | 07 | |
| OR | ||
| (b) Discuss Transfer moulding and Injection Moulding with neat sketch | 07 | |
| (a) Explain how grain structure is affected during hot cold working | 07 | |
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