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Write a short note any four Q1.(a,b,c,d,e)
1(a)
Transfer molding process
5 M
1(b)
Friction welding
5 M
1(c)
CO2 mould casting
5 M
1(d)
Extrusion
5 M
1(e)
Mechanism of sintering
5 M
2(a)
With a neat sketch explain the principle and working of resistance welding process. Also discuss its advantages, limitations, and applications.
8 M
2(b)
Differentiate Welding, soldering and brazing.
6 M
2(c)
Discuss Rotational Molding process with neat sketch.
6 M
3(a)
Describ the basic steps of provider metallurgy process. Discuss applications, advantages and disadvantages of power metallurgy.
8 M
3(b)
Describe inspection of castings.
6 M
3(c)
Write short note on microstructure of welds.
6 M
4(a)
What is NDT.List various methods of NDT Explain Ultrasonic method of crack detection.
8 M
4(b)
With a neat sketch explain the working principle of plastic injection mounding process.
6 M
4(c)
What is meant by forging? Differentiate between closed die forging and open die forging.
6 M
5(a)
Define weldability. Differentiate between TIG and MIG welding process.
10 M
5(b)
Describe in detail various rolling defects.
10 M
6(a)
A cylindrical riser must be designed for a sand casting mould. Casting itself is a rectangular plate made of steel, with dimensions 7.5 cm X 12.5 cm X 2.0 cm. Previous observations have indicated that the total solidification time (TST) for this casting is 1.6 min. The cylinder for riser will have D/H ratio=1. Determine the dimensions of riser so that its TST=2.0 min.
8 M
6(b)
Explain vacuum forming process of polymers.
6 M
6(c)
Write short note on application of plastics in industries.
6 M
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