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c. Mention any 3 types of classification of automobiles with examples for each type.

(6)
d. Define drag and lift and explain their significance for a body in flight. (4)
a. What are the factors affecting human comfort in an air-conditioned space? (4)
b. List any three car manufacturers in India and the cars they produce. (3)
c. Name the main components in the power train of an automobile and give their
functions. (5)
d. Name three types of jet engines and their applications. (3) '

PART C
Answer any two questions completely

a. What is meant by an alloy? What is the purpose of alloying? (2)
b. Explain BCC and FCC structures with the help of the figure of a unit cell. (6)

c. Name five material property tests for engineering materials with their purpose. (5)
d. List any four advantages and three disadvantages of CNC machines. (7)

a. List two main characteristics of composites and ceramics and give examples for

each. (6)
b. Define (i) Toughness (ii) Hardness (iii) Ductility and (iv) Malleability. (4)
c. Classify manufacturing process for materials with examples for each class. (8)

d. Identify a possible manufacturing process for the following products:

(i) Plastic bottle (11) Rubber hose (111) Turbine blades (iv) Steel rod. (2)

a. How are engineering materials classified? Give examples. (5)

b. Name and define 5 operations that can be performed on a lathe. (5)

c. Explain and classify ( i) Forging (ii) Rolling. (6)

d. Name two products that can be produced by each of the following processes:

(i) Welding (11) Soldering (iii) Extrusion (iv) Casting. (4)
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