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c) What are the types of gas turbine engines used in air craft and write their basic

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differences. (5)
PART ^
Answer any two full questions.

a) How engineering materials are classified? Give two examples for each group. (5) b)
Define Crystal Lattice, Unit cell and Packing factor. (5)
c) What is a composite? List four engineered composites and give their applications.
(5) d)
Draw a typical stress strain curve for mild steel and mark the salient points. (5)

a) What are the main mechanical and magnetic properties of materials? (5)

b) List any four Destructive material testing methods and explain. (5)
c) Distinguish between soldering, brazing & welding. (5)
d) What are the different types of flames in Oxy Acetylene gas welding process?
Explain. (5)
a) With a neat sketch, explain forging operations. Give two specific advantages of
forging over casting method. (7) b) Draw the block diagram of a lathe and explain
the various lathe operations. (6)

c) List the advantages of CNC machining over conventional machining operations.(4)
d) Give one example each for a part manufactured by casting, rolling, extrusion and
forging. (3)

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