Diploma-Diploma Mechanical Engineering 7th Sem Advance Fabrication Techniques(Gujarat Technological University-2013)
Thursday, 29 August 2013 06:21anudouglas
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGG. – DLM - SEMESTER– VII • EXAMINATION – WINTER 2012
Subject code: 372305 Date: 17-01-2013
Subject Name: Advance Fabrication Techniques
Time: 02:30 pm – 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.
4. English version is considered to be Authentic.
Q.1 (a) Explain need of advance fabrication techniques. 07
(b) Explain in brief on basic fabrication techniques. 07
Q.2 (a) List various types of copying lathe and explain working principle of any
one.
(b) Write constructional details and limitations of any one copying lathe. 07
OR
(b) Write advantages and disadvantages of any one copy milling machine. 07
Q.3 (a) Explain construction and working principle of pantograph die sinking
machine.
(b) Write advantages and disadvantages of jig boring machine. 07
OR
Q.3 (a) Explain construction and working principle of jig boring machine. 07
(b) Write advantages and disadvantages of pantograph die sinking machine. 07
Q.4
(a) Write short note on dielectric medium for spark erosion machine. 07
(b) Write hobbing process steps. 07
OR
Q. 4 (a) Write short note on different tool material for spark erosion machine.
(b) Write Characteristics of mold material & hob materials for hobbing
process.
Q.5 (a) Write short note on Development of NC part programme in CAM. 07
(b) Write electroforming process steps. 07
OR
Q.5 (a) Write short note on Programme structuring & sequencing. 07
(b) Write basic working principle and selection criteria for electroforming
process.
| Earning: ₹ 6.10/- |
