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Diploma Engineering - SEMESTER–III • EXAMINATION – SUMMER • 2014
Subject Code: 3331901 Date: 13-06-2014
Subject Name: Manufacturing Engineering-I
Time: 10:30 am - 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.
4. English version is considered to be Authentic.
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Q.1 (a) Define the residual stress and give its effect on manufacturing processes. 07
(b) Define the following terms
1. Hardness 2. Toughness 3. Machinability 4. Ductility 07
Q.2 (a) Explain hot rolling and cold rolling process with neat sketch. 07
(b) Explain “ Three High Rolling Mill” with neat sketch. 07
OR
(b) Define following terms. 1. Ingot 2. Bloom 3. Billet 4. strip 07
Q.3 (a) Explain embossing and spinning processes with neat sketch. 07
(b) Explain wire drawing processes with neat sketch. 07
OR
Q.3 (a) List the metal forming processes and explain any one of them. 07
(b) Classify the press, list the operations perform on press and list the points
consider while selection of press. 07
Q.4 (a) List the various pattern allowances and explain them in brief. 07
(b) Explain the cupola furnace with neat sketch. 07
OR
Q. 4 (a) List out the different name of core and explain three of them. 07
(b) List out any seven casting defects, its causes and remedies. 07
Q.5 (a) Explain gas welding process with neat sketch. 07
(b) Write short-note on (1) Laser beam welding (2) Spot welding. 07
OR
Q.5 (a) Explain soldering and brazing processes. 07
(b) Explain submerge arc welding with neat sketch. 07
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