Sem
: 3rd Semester
Subject
: ME2201 Manufacturing Technology
Branch
: Mechanical Engineering
Exam
: Nov/Dec 2012 [ ODD Sem ]
Univ
: Anna Univ & Affiliated
Colleges
ME 2201 — MANUFACTURING TECHNOLOGY — I
PART A — (10 × 2 = 20 Marks)
1.
What are the pattern materials?
2.
Explain the term fettling.
3.
What is the application of carburizing flame?
4.
What are the diameter and length of the
electrodes available in the market?
5.
Explain the term Extrusion process.
6.
What are the disadvantages of forging processes?
7.
Define ‘‘Embossing’’.
8.
Write short notes on hydro forming.
9.
Define degree of polymerization.
10.
What is rotational moulding of plastics?
PART B — (5 × 16 = 80 Marks)
11.
(a) (i)
Name the pattern allowances which can be
quantitatively specified.
Write brief
note on each of them.
(ii)
Which properties are desirable for a moulding sand for
sound casting?
Explain.
Or
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(b)
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(i)
(ii)
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Describe
the operation of a Cupola furnace for melting cast iron.
Compare
precision investment casting and shell moulding from the
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point of
process, product and applications.
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12.
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(a)
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(i)
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Discuss the filler and flux materials using in Arc
welding process.
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(ii)
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Describe
the types of flames obtained in an
oxy-acetylene gas welding process giving the applications.
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Or
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(b)
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(i)
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Explain
the TIG and MIG system of welding. Give the application of
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each.
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(ii)
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Explain
the resistance welding process
giving the equipment,
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parameters
controlled and the applications.
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13.
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(a)
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(i)
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How do you
compare forged components with cast components?
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(ii)
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Explain
the types of rolling mills with a neat sketch.
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Or
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(b)
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(i)
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Distinguish between wire drawing and tube drawing
with sketches.
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(ii)
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Explain
with neat sketches of
upsetting and drawing operations.
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down
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14.
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(a)
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(i)
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Explain
with a sketch the principle of stretch forming.
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(ii)
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Washers of
10 mm inside diameter and 20 mm outside diameter are to be
obtained from 1mm thick sheet metal.
Sketch the tools required.
(8)
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Or
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(b)
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(i)
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What
is high energy forming, and in what form
is the principle
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applied?
Sketch an example of one application.
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(ii)
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Explain the principle of metal spinning process with
a neat sketch.
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15.
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(a)
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(i)
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Discuss
the various properties of plastics.
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(ii)
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Sketch and
explain the injection moulding process.
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Or
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(b)
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(i)
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Why is
screw injection moulding machine better than a ram
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type
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injection
moulding machine?
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(ii)
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Discuss
the processing of thermosetting plastics.
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