Download GTU BE/B.Tech 2019 Summer 7th Sem New 2171913 Metal Forming Analysis Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 7th Sem New 2171913 Metal Forming Analysis Previous Question Paper

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII(NEW) EXAMINATION ? SUMMER 2019
Subject Code:2171913 Date:10/05/2019

Subject Name:Metal Forming Analysis

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.

Q:1 (a) Differentiate direct and indirect extrusion process. 03
(b) Explain a Forming Limit diagram. 04
(c) What is Drawability? List and Discuss factor Affecting to Drawability

07
Q:2 (a) Define the following terms: (i) Hot forming, (ii) Cold Forming,
(iii) Flow Stress

03
(b) Explain various Rolling defects.

04
(c) Give short note on Two-Dimensional Mohr's circle method for stress
analysis.

07
OR
(c) Explain VonMises & Tresca theory of yielding.

07
Q:3 (a) Explain clearance in sheet metal operation.

03
(b) Explain spring back effect in bending process.

04
(c) A cold roll sheet with shear strength of 350MPa & thickness of 3mm is
to be Subjected blanking operation. The diameter of blank to be
obtained is 130mm & Clearance 0.075mm.What is the appropriate die &
punch diameter & Punch force for operation?

07
OR
Q:3 (a) Determine Engineering Strain and True strain. 03
(b) Explain Anistrophy in sheet metal

04
(c) Explain typical arrangement of roll & roll mills with neat sketches.

07
Q:4 (a) What do you understand by shear on punch and die?

03
(b) Explain Wire Drawing processes in brief.

04
(c) Explain various operations performed on sheet metal press machine.

07
OR
Q:4 (a) Define angle of bite and discuss its effect in rolling process.

03
(b) What are the benefits of hydrostatics extrusion process?

04
(c) Explain friction board drop hammer for forging

07
Q:5 (a) Explain Blanking operation with neat sketch.

03
(b) State difference between compound and progressive dies.

04
(c) Discuss analysis of strip rolling derive equation for projected arc length.

07
OR
Q:5 (a) Define (i) dry drawing (ii) wet drawing (iii) tube drawing.

03
(b) How is impression die forging different from closed die forging

04
(c) Explain about importance of Upper bound and Lower bound theorem in
metal forming.
07

********
FirstRanker.com - FirstRanker's Choice