Winter 2014 Manufacturing Engineering-1 Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–III • EXAMINATION – WINTER • 2014
Subject Code: 3331901 Date: 27-11-2014
Subject Name: Manufacturing Engineering – I
Time: 10:30 am - 01:00 pm Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.

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Q.1 Answer any seven out of ten. 14

1. Define strength

2. Factors affecting Recrystalisation Temperature are (1) ____ (2) _____ (3)____.

3. Define Manufacturing processes.

4. Suggest appropriate metal working process for (1) Bolt Head (2) Pipes
(3) Fly wheel (4) presser vessels.

5. Write Three different types of Gas flames
(1)___ (2) ___ (3) _____.

6. Differentiate Soft soldering and Hard soldering.

7. Draw four types of Weld Joints.

8. Name four types of cores.

9. Give full Name of MIG, TIG & SAW.

10. Functions of Runner & Risers in casting process.

Q.2 (a) Give meaning of the term with sketch (1) Ingots (2) Billets (3) blmoo (4) slab. 03

OR

(a) Draw neat Sketch of Three high rolling Mill & lable it. 03

(b) Classify the forging process in details. 03

OR

(b) List the Defects of forging Process. 03

(c) Explain the Punching operation with neat sketch. 04

OR

(c) Explain the Bending operation with neat sketch. 04

(d) Explain the Blank Drawing operation with neat sketch. 04

OR

(d) Explain the Wire Drawing operation with neat sketch. 04

Q.3 (a) List various factors which are consider for selection of Pattern materials. 03

OR

(a) What is pattern? Explain the nacecity of patter in casting. 03

(b) List the casting process with line diagram. 03

OR

(b) Explain preparation of mould. 03

(c) Draw neat sketch of cupola furnace & lable it. 04

OR

(c) Draw neat sketch of Induction furnace & lable it. 04

(d) State Defects in Casting with sketch. 04

OR

(d) List the hand tools with neat sketch used in molding process. 04

Q.4 (a) Give at list five application of welding process. 03

OR

(a) Write classification of non pressure welding process. 03

(b) Explain with neat sketch nacecity of -Edge preparation in welding process. 04

OR

(b) Explain with neat sketch spot welding process. 04

(c) Write safety precautions in metal joining processes. 07

Q.5 (a) Write the names of fasteners’ with their applications. 04

(b) Write short notes on Adhesive materials. 04

(c) Draw set up of Arc welding process. 03

(d) Give causes of welding defects. 03

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