Introduction to Basic Manufacturing Processes and ... - always yours

346 Introduction to Basic Manufacturing Processes and Workshop Technology
31. Describe briefly the methods of carbon arc and metallic arc welding.
32. Compare A.C. power source welding with D.C. power source welding.
33. Explain the principle of atomic hydrogen welding.
34. Write short notes on :
(a) Arc crater
(b) Arc blow
(c) Electrode
(d) Flux
35. What safety precautions are associated with electric arc welding?
36. Explain carbon arc welding with neat sketch.
37. Explain TIG welding and MIG welding with its merits, demerits and application.
38. Compare TIG welding with MIG welding.
39. Explain submerged arc welding with neat sketch.
40. Explain electro-slag welding with neat sketch. Compare it with electro-gas welding.
41. Define flux shielded metal arc welding.
42. Explain operation, equipment, advantages, disadvantages and applications of flux shielded
metal arc welding.
43. Explain plasma arc welding with neat sketch.
44. Compare plasma arc welding and TIG welding.
45. What do you under stand by thermit welding? What are its main advantages?
46. How does thermit welding process differ from ordinary arc welding?
47. Write short notes on:
(i) Forge or smithy welding.
(ii) Leftward welding.
(iii) Rightward welding.
(iv) Vertical welding
48. What are the electrodes used in arc welding made of? What is electrode coating and why are
they provided?
49. How is an electrode specified? What factors govern the selection of an electrode?
50. Describe the following welding methods and their specific merits, demerits and applications:
(i) TIG welding
(ii) MIG welding
51. Describe the process of submerged arc welding stating its advantages and limitations.
52. With the help of a neat diagram explain the process of electro slag welding.
53. Discuss the method of resistance welding. What are its advantages and disadvantages?
54. What is the main source of heat in resistance welding? Why is the control of pressure
important in resistance welding?
55. Compare spot welding with seam welding.
56. Discuss, with the help of neat sketch, the principle of spot welding,
57. Describe in detail with set up process parameters, advantages, disadvantages and applications
of the following: