Solved Important Questions

SOLVED QUESTIONS

1. What are the advantages and disadvantages of welding compared to other types of assembly operations? 

Refer chapter 2.1.1 in Page 2.2.

2. List out the different types of welding process. Briefly explain the rking principle of any two welding process. 

Refer chapter 2.2 in Page 2.3 for different types of welding process; refer chapter 2.4 in Page 2.5 for working principle of gas welding process and refer chapter 2.5 in Page 2.13 for working principle of arc welding process.

3. Describe with a neat sketch the components of oxyacetylene gas welding equipment. 

or

Explain the equipment of an Oxy-Acetylene gas welding.

Refer chapter 2.4.4 in Page 2.6.

4. Sketch the three types of flames in oxy-acetylene welding and state their characteristics.

or

Describe the types of flames using in gas welding process.

Refer chapter 2.4.5 in Page 2.9.

5. Explain the metal arc welding process with a neat sketch.

Refer chapter 2.5 in Page 2.13.

6. Discuss the various filler and flux materials used in welding.

Refer chapter 2.5.3 in Page 2.17.

7. Distinguish between gas welding and arc welding.

Refer chapter 2.5.5 in Page 2.20.

8. Explain about the equipment and operation of GTAW process.

Refer chapter 2.6 in Page 2.21.

9. Describe MIG welding with a neat sketch.

Refer chapter 2.7 in Page 2.24.

10. Explain the gas metal arc welding processes with neat sketch and its process capabilities.

Refer chapter 2.7 in Page 2.24.

11. With the help of suitable diagrams, explain the following types of welding:

(i) TIG welding process.

(ii) Electro slag welding process.

Refer chapter 2.6 in Page 2.21 for TIG welding process.

Refer chapter 2.9 in Page 2.31 for Electro slag welding process.

12. Compare MIG and TIG welding in respect of their principle of working and field of application.  

Refer question 45 in Page 2.100:

13. Sketch the overall set up of submerged welding process and explain the working principle. Mention its applications.

Refer chapter 2.8 in Page 2.29.

14. Differentiate electro gas welding and electro slag welding with its principles and applications. 

Refer chapter 2.7 in Page 2.24 for electro gas welding and refer chapter 2.9 in Page 2.31 for electro gas welding.

15. What is the principle of resistance welding processes?

Refer chapter 2.10.1 in Page 2.34.

16. Explain the resistance welding process giving the equipment, parameters controlled and the applications.

Refer chapter 2.10.1 in Page 2.34.

17. Explain the resistance spot welding process with a neat sketch.

Refer chapter 2.10.4 in Page 2.37.

18. Explain the percussion welding process.

Refer chapter 2.10.8 in Page 2.43.

19. Describe with a neat sketch the principle of percussion welding. State its advantages and limitations.

Refer chapter 2.10.8 in Page 2.43.

20. Describe plasma arc welding and give their applications.

Refer chapter 2.11 in Page 2.46.

21. What is the principle of Thermit welding? Explain with a neat sketch of the welding arrangement.

Refer chapter 2.12 in Page 2.50.

22. Explain the variants of Thermit welding process.

Refer chapter 2.12.1 in Page 2.51.

23. Explain the method of electron beam welding and given their applications.

Refer chapter 2.13 in Page 2.54.

24. Explain the electron beam welding process with a neat sketch.

Refer chapter 2.13 in Page 2.54.

25. Explain the principle of cperation, advantages and limitations of electron beam welding.

Refer chapter 2.13 in Page 2.54.

26. Explain the method of laser beam welding and give their applications. 

Refer chapter 2.14 in Page 2.57.

27. Explain the process of rotary drive friction welding with its advantages and limitations.

Refer chapter 2.15 in Page 2.60.

28. Explain the three variables involved in continuous drive friction welding.

Refer chapter 2.15 in Page 2.60.

29. Describe with neat sketches various steps in friction welding.

Refer chapter 2.15.1 in Page 2.62.

30. Write short notes on (i) Electron beam welding (ii) Friction stir welding.

Refer chapter 2.13 in Page 2.54 for electron beam welding and chapter 2.16 in Page 2.64 for friction stir welding.

31. Describe the ultrasonic welding process with a neat diagram.

Refer chapter 2.17 in Page 5.67

32. Explain the following welding process with neat sketch

(i) Resistance seam welding

(ii) Friction stir welding.

Refer chapter 2.10.5 in Page 2.39 for resistance seam welding and refer chapter 2.16 in Page 2.64 for friction stir welding.

33. Explain the various welding positions with a neat sketch.

Refer chapter 2.18 in Page 2.71.

34. Describe brazing process.

Refer chapter 2.19 in Page 2.72.

35. Explain various methods of brazing.

Refer chapter 2.19.1 in Page 2.73.

36. Write short notes on soldering process.

Refer chapter 2.20 in Page 2.75.

37. What is a soldering flux? What are the different types of soldering fluxes used?

A substance added to molten metals on the surfaces to clean the surfaces and result in a better bond is called soldering flux.

Refer chapter 2.20.1 in Page 2.77 for different types of soldering fluxes.

38. Distinguish between soldering and brazing.

Refer chapter 2.20.4 in Page 2.79.

39. Describe filler and flux materials used in brazing and soldering processes.

Refer chapter 2.19.2 in Page 2.74 for filler and flux materials used in brazing process and refer chapter 2.20.2 in Page 2.77 for in soldering process.

40. What is meant by welding defect? Explain any five welding defects.

Refet chapter 2.21 in Page 2.80.

41. Sketch the different types of weld defects and mention how they occur.

Refer chapter 2.21 in Page 2.80.

42. What are the non destructive tests used in welding inspection? Explain any one method.

Refer chapter 2.22 in Page 2.86.