Electric Welding Interview Questions:

Following are the below Electric Welding Interview Questions and Important Questions which is very useful for interviews and exams

1. Describe with neat sketches the various methods of electric resistance welding. Give its merits or demerits with respect to arc welding.

2. Name and describe various types of resistance welding processes.

3. Why projection welding is considered superior to spot welding ?

4. Explain with neat sketches, the construction, principle of operation and applications of three different types of resistance welding. Give its demerits with respect to arc welding.

5. Explain the principle of electric spot welding and seam welding.

6. Discuss the merits and demerits of electric resistance and arc welding. Indicate when each find its use.

7. Explain various types of electric welding. Explain seam welding in detail.

8. Explain the role of ignition contactor in welding process. What are its advantages over mechanical switches ?

9. What is the fundamental difference between electric arc welding and resistance welding ? Explain with neat sketch how the spot welding is carried out by spot welding machine.

10. Explain the various types of resistance and arc welding. How the mechanical pressure, amount of current and its duration is controlled in case of resistance welding ? What is atomic hydrogen welding ? Explain. Give its relative merits.

11. Describe briefly various types of arc welding processes used in industry.

12. Why a drooping characteristics of supply voltage is essential for maintaining steady arc in electric welding and how this characteristic is obtained in case of a dc source.

13. Differentiate between carbon arc and metal arc welding.

14. What are the advantages of using coated electrodes ? Mention types of coating used.

15. Compare the performance of various electrodes used in electric arc furnaces.

16. Describe various welding schemes specifying the equipment for controlling temperature, pressure etc.

17. Draw a neat sketch of welding transformer showing primary and secondary circuits.

18. Discuss laser welding and electron beam welding.

19. Explain electron beam welding and give its disadvantages.

20. Explain different types of electric welding. What are qualities of good weld.

21. With suitable example explain the requirements of good welding.

22. Compare dc and ac welding methods.

23. What are the basic components of dc and ac arc welding sets and explain their working.

24. Discuss the need of dc supply for electric welding. Why dc supply is preferred over ac supply for welding ?

25. What is welding ? What are the different types of electric welding ? What type of electric supply is suitable for electric welding ? Explain.

26. What is the fundamental difference between electric arc welding and resistance welding ? Give their merits and demerits.

27. Compare in details, the electric arc welding with resistance welding. Explain with the help of a neat sketch the process of spot welding.

28. Explain the basic difference between electric arc welding and resistance welding.

29. Write short notes on the following

• Resistance welding.
• Arc welding.
• Resistance and arc welding.
• Atomic hydrogen welding.
• Ultrasonic welding.
• Laser welding.
• Advantages of coated electrodes.
• Power control in arc welding.
• Electric supply for arc welding.
• Welding transformer.
• Welding generator and welding transformer.