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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – V-EXAMINATION – WINTER 2015
Subject Code: 3351903 Date: 08/12/2015
Subject Name: Manufacturing Engineering III
Time: 10:30 AM TO 1:00 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: Machine tool
2. Define: Cutting Speed & Feed .
3. Briefly describe pull broaching.
4. Briefly describe push broaching.
5. List the applications of jig boring machine.
6. List various types of threads.
7. State the different methods of thread production.
8. Write any three properties of abrasive particles.
9. Write any three advantages of broaching process.
10. State the need for special purpose machine.
Q.2 (a) Write short note on Glazing. 03
OR
(a) Write short note on Dressing. 03
(b) List various abrasive used in the grinding wheel. 03
OR
(b) Explain Honning Process. 03
(c) Describe types of grinding wheels. 04
OR
(c) Write short note on Centre less grinder. 04
(d) Explain Tool and Cutter grinder. 04
OR
Q.3 (a) Classify various methods for gear production 03
OR
(a) Differentiate between generating and forming processes. 03
(b) Name different finishing operations performed on gear. 03
OR
(b) Explain Gear shaving in brief. 03
(c) Explain Gear milling process. 04
OR
(c) Explain Gear Hobing process. 04
(d) Explain any one Gear finishing method. 04
OR
(d) Explain thread Rolling process. 04
Q.4 (a) List the application of Abrasive jet machining 03
OR
(a) List various electrolytes used in ECM. 03
(b) Compare the EBM and LBM. 04
OR
(b) Explain Ultrasonic machining. 04
(c) Explain Electro discharge machining (EDM) with neat sketch. 07
Q.5 (a) Write short note on thread milling. 04
(b) Differentiate between standard machine tools and special purpose machine tools. 04
(c) What is balancing of grinding wheel? 03
(d) State the types of Jig boring machine. 03
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