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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER -III• EXAMINATION SUMMER 2017
Subject Code: 330202 Date: 01-05 2017
Subject Name: Manufacturing Process Material Technology
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.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1

Explain principle of arc welding and give its advantages and
disadvantages.
07




07

Explain "pattern allowances".


"

Q.2

List various properties of moulding sand and explain it.
07



07

List various safety precautions to be followed while welding.




OR

Write Short note on hot rolling process.
07


Q.3

Differentiate between hot working and cold working process.
07



07

List various mechanical properties of material and define any two.




OR
Q.3

Select the material of following automobile components and give justification.
Piston Connecting rod Crank shaft
07



07

Write short note on types of production.




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Q.4

Explain quenching media for heat treatment of steel.
07



07

State the objective of heat treatment process.




OR
Q.4

Explain the following operations with sketch.
Grooving Chamfering
07



07

Explain the working principle of milling machine with neat sketch




Q.5

Draw a neat diagram of Lathe machine and explain its major parts.
07



07

Explain quick return motion mechanism of shaper.




OR
Q.5

Explain following operations with sketch
blanking piercing.
07



07

Give classification of drilling machine.