14. Explain the working principle of chemical rockets. How are chemical rockets classified? (6)

MODULE 3
15. a)Differentiate between refrigeration and air conditioning (3)
b) State briefly the impact of Freon’s (CFC’s) on refrigeration and air conditioning (3)
16. What are the advantages, disadvantages and applications of All air systems and All water

systems. (6)

17. >) What are the conditions required for human comfort? (4)

b) Draw comfort chart (2)
MODULE 4

18. Name 6 major automobile manufacturers in India and list 3 of their popular models, (6)

19. Explain any 6 ways of classifying automobiles (6)

20. Explain the aerodynamic forces acting on a body in flight (6)
MODULE 5

21. Explain the different types of lower kinematic pairs with neat sketches. (7)

22. a) Explain any 4 types of engineering design? (4)

b) Explain mechanical advantage, (3)

23. a) What is the relevance of codes & standards in manufacturing systems? (4)

b) What is meant by reliability? (3)
MODULE 6

24. What 15 meant by heat treatment? List any two heat treatment process and their purpose, (7)

25. Explain any four methods of manufacturing. (7)

26. a) If you have to test a specimen without breaking it, what method will you suggests for the
testing? Why? (3)

b) Mention any two metal joining processes and name any one product made by these methods.
(4)