Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2161909 Production Technology Previous Question Paper
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2161909 Date:16/05/2019
Subject Name:Production Technology
Time:10:30 AM TO 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.
Q.1 (a) When the use of positive rake angles and negative rake angles is
recommended?
03
(b) Derive an expression of shear plane angle in single point cutting. 04
(c) What are the factors that affect tool life? Briefly describe their
influence.
07
Q.2 (a) Explain the characteristics of cutting fluid. 03
(b) Why heat is generated in cutting, label various heat zones in metal
cutting.
04
(c) What are the different methods of gear manufacturing? List the
methods and explain any one.
07
OR
(c) In an orthogonal cutting operation, the following data have been
observed:
Chip thickness:0.62 mm
Feed: 0.2 mm/rev
Rake angle: 15?
Calculate: Cutting ratio, chip reduction co-efficient, shear angle,
dynamic shear strain involved in the deformation process.
07
Q.3 (a) What are the differences between Jigs and Fixtures?
03
(b) Explain construction and working of template jig. 04
(c) Explain 3-2-1 principle of location with figures. 07
OR
Q.3 (a) Discuss characteristics of cutting tool material. 03
(b) List down various gear finishing process and explain principle of
gear hobbing.
04
(c) Enlist various clamping devices used in jigs and fixtures. Explain
any two with neat sketch.
07
Q.4 (a) What is shear on a punch or die? 03
(b) Explain knockout with neat sketches.
04
(c) What are the various types of strippers? Explain their function with
the help of suitable sketches.
07
OR
Q.4 (a) Compare direct pilots with indirect pilots. 03
(b) What is meant by clearance? Why it is important in shearing
operation?
04
(c) Classify the die associated with press work and explain about
compound die and progressive die.
07
FirstRanker.com - FirstRanker's Choice
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2161909 Date:16/05/2019
Subject Name:Production Technology
Time:10:30 AM TO 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.
Q.1 (a) When the use of positive rake angles and negative rake angles is
recommended?
03
(b) Derive an expression of shear plane angle in single point cutting. 04
(c) What are the factors that affect tool life? Briefly describe their
influence.
07
Q.2 (a) Explain the characteristics of cutting fluid. 03
(b) Why heat is generated in cutting, label various heat zones in metal
cutting.
04
(c) What are the different methods of gear manufacturing? List the
methods and explain any one.
07
OR
(c) In an orthogonal cutting operation, the following data have been
observed:
Chip thickness:0.62 mm
Feed: 0.2 mm/rev
Rake angle: 15?
Calculate: Cutting ratio, chip reduction co-efficient, shear angle,
dynamic shear strain involved in the deformation process.
07
Q.3 (a) What are the differences between Jigs and Fixtures?
03
(b) Explain construction and working of template jig. 04
(c) Explain 3-2-1 principle of location with figures. 07
OR
Q.3 (a) Discuss characteristics of cutting tool material. 03
(b) List down various gear finishing process and explain principle of
gear hobbing.
04
(c) Enlist various clamping devices used in jigs and fixtures. Explain
any two with neat sketch.
07
Q.4 (a) What is shear on a punch or die? 03
(b) Explain knockout with neat sketches.
04
(c) What are the various types of strippers? Explain their function with
the help of suitable sketches.
07
OR
Q.4 (a) Compare direct pilots with indirect pilots. 03
(b) What is meant by clearance? Why it is important in shearing
operation?
04
(c) Classify the die associated with press work and explain about
compound die and progressive die.
07
Q.5 (a) Classify non conventional machining process. 03
(b) What are the types of electrolyte used in ECM? List the desirable
properties of them.
04
(c) Explain with neat sketch working principle, process capabilities and
limitation of water jet machining.
07
OR
Q.5 (a) Using taylor equation and using n = 0.5, c = 400. Calculate the
percentage increase in tool life when cutting speed is reduced 50%.
03
(b) What are the basic requirements for tool materials for EDM? 04
(c) Write short note on LBM.
07
*************
1
FirstRanker.com - FirstRanker's Choice
This post was last modified on 20 February 2020