Winter 2013 Manufacturing Engineering-1 Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–III • EXAMINATION – WINTER 2013
Subject Code: 3331901 Date: 28-11-2013
Subject Name: Manufacturing Engineering-I
Time: 02:30 pm - 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.
4. English version is considered to be Authentic.

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Q-1 (a) Define the following terms (any FOUR) 08
(i) Ductility (ii) Rigidity (iii) Malleability (iv) Toughness (v) Brittleness

(b) Define Recrystalization temp. & State the various factors affecting on it. 06

Q-2 (a) State the comman defects in forged components & stating the reasons for those defects. 07

(b) List the hand-tools used in preparing the Mould with sketch. State its application of each. 07

OR

(b) List the names of Destructive and non-destructive test for weld joints.
 Explain any one of them.07

Q-3 (a) Define the Metal Forming process & List the different types. And State the classification of forming process. 07

(b) Explain Extrusion Process, And State its Advantages & limitations. 07

OR

Q-3 (a) State the meaning of Strip, Sheet & Plate. And Explain Three High Rolling Mill with
a neat sketch. 07

(b) Classify the Mechanical Press & List the operations which are performed on Press. Which
 are the considerable points for selection of Press? 07

Q-4 (a) Define the term “Pattern”. List the types of patterns and explain any ONE of them. 07

(b) Explain the Centrifugal Casting Process. 07

OR

Q-4 (a) Define Pattern Allowances. And State its types & Explain any TWO of them. 07

(b) Explain the Cupola Furnace with neat sketch & Label various parts with diff zone on it. 07

Q-5 (a) Explain the principle of Gas welding & state the advantages & Disadvantages. 07

(b) List the various types of Arc Welding process. And Explain Submerged Arc Welding
process with a neat sketch. 07

OR

Q-5 (a) State the Equipment & hand-tools used in Gas Welding. And Describe three types of
Flames with a neat sketch. 07

(b) State the types of Resistance Welding process. And explain Spot Welding Process with
a neat sketch. 07

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