Guru Gobind Singh Indraprastha Vishwavidyalaya 2003 B.Tech ETME – 107 Subject : Manufacturing Processes - Question Paper
Wednesday, 29 May 2013 04:40Web
End-Term exam
First Semester [B.Tech] – December 2003
Paper Code : ETME – 107 Subject : Manufacturing Processes
Time : three Hours
Maximum Marks : 75
Note : Attempt any five ques. in all. provide freehand sketch where necessary.
Q1
( a )
discuss the subsequent kinds of sand:
Facing sand 3. System sand
Backing sand 4. Parting sand
8
( b )
Why does the part of sprue decrease downwards?
3
( c )
What is the importance of permeability in molding sands?
2
( d )
Imagine a gating system without a riser. How does it affect the casting?
2
Q2
( a )
What is the difference ranging from hot chamber and cold chamber die casting? discuss 1 process with suitable diagrams.
8
( b )
discuss centrifugal casting? How are the centrifugal casting methods classified?
3
( c )
Why is the mold in permanent mold casting preheated?
4
Q3
( a )
describe “forgeability”. On what factors does it depend?
3
( b )
Write short notes on swages, tongs and flatters used in a forging shop.
4
( c )
What is upset forging and how is it done?
3
( d )
How are a forging hammer and drop hammer alike and how do they differ?
5
Q4
( a )
Sketch and discuss the working of an engineer's try square?
6
( b )
elaborate the advantages of a twist drill over flat drill?
4
( c )
What is the significance of right marking?
3
( d )
What is the difference ranging from a mallet and a hammer?
2
Q5
( a )
define hems and seams used in sheet metal work.
6
( b )
discuss the utility of different allowances for making components by sheet metal work.
3
( c )
Differentiate ranging from piercing, punching and blanking.
6
Q6
( a )
With the help of neat sketches discuss the “spot welding method”.
5
( b )
Sketch the 2 polarities of DC supply and compare these for welding process.
4
( c )
What is the purpose of coating on an arc welding electrode?
3
( d )
Sketch the 3 kinds of flames used in oxy-acetylene. Gas welding provide the uses of every.
3
Write short notes on any 3 of the following:
Q7
( a )
different edge preparations used for welding joints.
three x 5
( b )
Difference ranging from welding, soldering and brazing.
( c )
kinds of files.
( d )
Binders used in molding sand.
Earning: Approval pending. |