Download GTU B.Tech 2020 Summer 6th Sem 2161909 Production Technology Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Summer 6th Sem 2161909 Production Technology Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER? VI EXAMINATION ? SUMMER 2020
Subject Code: 2161909 Date:28/10/2020
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.


MARKS
Q.1 (a) Explain types of chips that occur in metal cutting.
03

(b) Differentiate between orthogonal and oblique cutting?
04

(c) Explain tool signature as per ASA and write importance of
07

various angle in it.
Q.2 (a) How is the chip formed in metal cutting? Explain the terms
03
shear plane and shear zone.

(b) Prove that: tan ? = r cos / (1 - r cos ) .
04

(c) Enumerate the factors affecting tool life. Briefly explain the
07
effect of each factor.

OR


(c) A mild steel tubing of 50 mm outside diameter is turned on a
07
lathe with cutting speed of 20 mpm(meter per min.)with a tool
having rack angle of 35. The tool is given a feed of
0.10mm/rev. and it is found by dynamometer that the cutting
force 250 Kg and feed force 100 Kg. Length of continuous chip
in one revolution 80 mm and width of chip 2 mm. Calculate the
co-efficient of friction, shear plane angle, velocity of chip
along tool face, chip thickness and shear strength of work
material.
Q.3 (a) What is cutting fluid? Explain with suitable example.
03

(b) Explain Taylors tool life equation, VT n = constant.
04

(c) Explain about Angle jig and box jig with neat sketch.
07

OR

Q.3 (a) Draw and discuss Hinged-clamping device.
03

(b) List out various types of drill bushes and its application.
04

(c) Illustrate Locating 3-2-1 principle of Jigs and Fixtures.
07
Q.4 (a) Illustrate Strip layout related to press work.
03

(b) How the Presses are classified? Sketch any one of it.
04

(c) L ist the various thread manufacturing processes. Explain about
07
thread rolling process.

OR

Q.4 (a) Define the terms: Clearance, Piercing and Blanking.
03

(b) List the various gear finishing processes and explain any two
04
processes

(c) What are the different methods of gear manufacturing? List the
07
methods and explain any one.
Q.5 (a) Explain basic principle of EDM with neat sketch.
03
1

---

(b) Differentiate between Die-electric fluid and Electrolyte Fluid
04
used in machining process.

(c) Write the difference between AJM and AWJM processes from
07
the viewpoint of working principle, application & limitations.

OR
Q.5 (a) Classify non-conventional machining processes.
03
(b) Illustrate USM machining process.
04
(c) Explain with suitable diagram working of electro discharge
07
machine. State its advantage, disadvantage and application.



*************
2

---