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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – V• EXAMINATION – SUMMER 2016
Subject Code: 3351903 Date:19/05/2016
Subject Name: Manufacturing engineering –III
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.
4. Use of programmable & Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
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Q.1 Answer any seven out of ten. 14
1. Define Cutting Speed and Feed.
2. Explain loading of grinding wheel.
3. What is dressing in grinding process.
4. What is abrasive?
5. Enlist types of gear.
6. List gear finishing processes name.
7. Briefly explain pull broaching process.
8. Write advantages of Thread milling.
9. What is Electrolyte ?
10. What is Lithography ?
Q.2 (a) What is the importance of Manufacturing engineering –III in industries ? 03
OR
(a)Draw a neat sketch of single point cutting tool showing its geometry. 03
(b)Briefly explain cutting action of grinding wheel. 03
OR
(b)State the need for balancing grinding wheel. 03
(c) Explain nomenclature of grinding wheel mark with the code WA 80 M 10 V17. 04
OR
(c) Explain Center less grinding operation with neat sketch. 04
(d) Explain tool and cutter grinder with neat sketch. 04
OR
(d)With neat sketch explain Gear shaping process. 04
Q.3 (a)Write short note on Abrasive Jet Machining (AJM). 03
OR
(a) List Gear finishing process. 03
(b) Write short note on Gear Broaching process. 03
OR
(b) Classify major types of Thread. 03
(c)Write short note on Thread chasing. 04
OR
(c) Explain Thread rolling process with neat sketch. 04
(d) Explain Thread milling operation with neat sketch 04
OR
(d)Draw neat sketch of broach with its various elements. 04
Q.4 (a)Classify the Broach machines. 03
OR
(a) List applications of Special Purpose Machines(SPM). 03
(b) Explain Single column jig boring machine with neat sketch. 04
OR
(b)List need of Micro Electro Mechanical System(MEMS). 04
(c) Classify non-conventional method of machining. Explain Electro Discharge Machining in detail. 07
Q.5 (a) Explain Ultra Sonic Machining in detail. 04
(b) Write short note on Gear hobbing. 04
(c) Describe classification of Gear manufacturing process. 03
(d)Give difference between EDM and ECM. 03
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