GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-VI (NEW) EXAMINATION - WINTER 2020
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Subject Code:2161909 Date:27/01/2021
Subject Name:Production Technology
Time:02:00 PM TO 04:00 PM Total Marks: 56
Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) What is the difference between production and manufacturing? 03
(b) What are crater wear and flank wear? Explain with neat sketch. 04
(c) Draw and explain Merchant’s circle diagram. 07
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Q.2 (a) What are chip breakers? If they are not used what adverse effects chip can 03 produce on the work, tool and surroundings?
(b) Explain Taylor’s tool life equation. 04
(c) Draw a neat sketch of box jig, indexing jig and channel jig. 07
Q.3 (a) Explain Slip and renewable bush. 03
(b) Explain the essential characteristics and function of cutting fluid. 04
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(c) What is Jamming? Discuss different methods of preventing jamming. 07
Q.4 (a) What is meant by fool proofing in the design of a jig? 03
(b) What is Cutting fluid? Explain in brief Purpose of cutting fluids. 04
(c) Explain the 3-2-1 locating concept using pins, with suitable sketches. 07
Q.5 (a) Classify the types of dies associated with press work. 03
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(b) What are the temperature measurement techniques used in 04 Machining? Explain any one in detail.
(c) Describe methods of reducing cutting forces in press operations. 07
Q.6 (a) What is the purpose of shear angle on a punch or die? 03
(b) Explain the advantages and disadvantages of progressive die. 04
(c) Explain any four press working operations with sketch. 07
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Q.7 (a) Why the servo controlled system is needed in EDM process? 03
(b) Explain in brief: Thread Rolling and Thread Milling 04
(c) Explain the construction and working principle of Plasma Arc Machining. 07
Q.8 (a) Give detailed classification of non-traditional machining processes. 03
(b) Draw neat sketch of a typical set up for Laser Beam Machining. 04
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(c) Explain with neat diagram construction and working of USM processes. 07
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