Reg. No..

[13BEAR302]

KARPAGAM UNIVERSITY

(Under Section 3 of UGC Act 1956)

COIMBATORE-641 021

BE DEGREE EXAMINATIONAERONAUTICAL ENGINEERING V SEMESTERAIRCRAFT MATERIALS AND MANUFACTURING PROCESSESTime : 3 Hours

Maximum Marks : 100

PART A (15X 2 = 30 Marks)1. What is hot dipping?

2. Define Hypo-eutectoid steels

3. Write down the effects of corrosion.

4. Mention the mechanisms used for strengthening the materials?

5. What is wrought alloy?6. List out Chemical composition of Stellite alloys is approximately.

7. define precipitation hardening

8. What are Types of coating used in super alloy.

9. list out the types of super alloys

10. Write down the trade names of Inconel &'Ni-Resist'

11. What are the applications of casting?

12. Define wax moulding.

13. What are the tests carried out to determine the quality of casting?

14. Define mould.

15. What are the properties good moulding sand?

PART B (5 X 14 = 70 Marks)

(Question No.16 is compulsory)

16. Explain Electron Beam Welding process with its advantages and disadvantages.(UNIT-4) (14)17. a) Explain in detail about the super alloys with its properties.

(14)

OR

b) Write down the properties of titanium and ceramics materials with its applications. (14) 18. a) Explain in detail about the selection and application of steels alloys. (14)

OR

b) Write down in detail about the forms of corrosion and prevention methods. (14)

19. a) Explain in detail heat treatment of light metal alloys. (14)

OR

b) Write down the properties of magnesium alloy with its application (14)

20. a) Describe the Milling Machining Process with a neat sketch and discus on its applications advantages and demerits.

(14)

OR

b) Explain the various operations performed by Lathe with simple sketches. (14)