STUPIDSID
1 (a)
Define true stress and true strain. Derive expression showing the relationship between true stress and engineering stress as well as true strain and engineering strain.
10 M
1 (b)
Explain with a neat sketch the hydrostatic pressure in metal working.
5 M
1 (c)
Write a note on determination of flow stress.
5 M
2 (a)
Explain the effect of the following on metal working processes (i) temperature, (ii) friction and lubrication.
10 M
2 (b)
Write a note on: i) deformation zone geometry, (ii) residual stresses in wrought products.
10 M
3 (a)
With neat sketches, describe various types of forging processes.
6 M
3 (b)
Explain die design parameters in forging, with a neat figure.
8 M
3 (c)
Explain ?friction hill concept? and the factors affecting it in forging.
6 M
4 (a)
Explain with neat sketch of rolling mill (i) four high rolling mill, (ii) tandem rolling mill.
10 M
4 (b)
Discuss the effect of front tension and back tension on the rolling process, with neat figures.
8 M
4 (c)
List defects in rolling.
2 M
5 (a)
Using neat sketches explain Rod drawing and wire drawing.
8 M
5 (b)
With neat sketch, briefly explain the different features of a drawing die.
4 M
5 (c)
Explain with neat sketches different method of tube drawing.
8 M
6 (a)
Give the classification of extrusion processes and explain any two processes with neat sketch.
10 M
6 (b)
Explain the following:
i) Metal flow and deformation during extrusion
ii) Defects in extrusion.
i) Metal flow and deformation during extrusion
ii) Defects in extrusion.
10 M
7 (a)
With neat sketches, explain combination die and progressive die. List the type of components produced in sheet metal work.
10 M
7 (b)
Write a note on forming limit criteria (Keeler-Goodwin diagram).
5 M
7 (c)
It is required to punch a hole of 10 mm dia in a mild steel plate of 10 mm thickness. Determine whether it is feasible or not, taking shear strength of the plate as 600 N/mm2 and compressive strength of the punch as 2000 N/mm2. If it is not possible, what could be done to produce this hole?
5 M
8 (a)
What is HERE? Explain explosive forming, with a neat figure.
8 M
8 (b)
With a flow chart, explain in detail the powder metallurgy process.
8 M
8 (c)
Explain any two methods of production of metal powder with sketches.
4 M
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