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Match the List-I (Welding processes) with List-II (Features):
List-I
A. Ultrasonic welding
B. Electron beam welding
C. Plasma arc welding
D. Stud welding
List-II
1. Gas heated to ionized condition for conduction of electric current
2. High frequency and high intensity vibrations
3. Requires vacuum
4. Exothermic chemical reaction
5. Ceramic ferrule Codes:
     A B C D
(a) 1 2 4  5
(b) 4 3 1  2
(c) 2 1 4  3
(d) 2 3 1  5
  • a)
    (a)
  • b)
    (b)
  • c)
    (c)
  • d)
    (d)
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Match the List-I(Welding processes) with List-II(Features):List-IA. Ul...
Welding Processes and Features:

I. Ultrasonic welding
- High frequency and high intensity vibrations

II. Electron beam welding
- Requires vacuum

III. Plasma arc welding
- Gas heated to ionized condition for conduction of electric current

IV. Stud welding
- Exothermic chemical reaction
- Ceramic ferrule

Matching:
A - 2
B - 3
C - 1
D - 5

Explanation:
Ultrasonic welding uses high frequency and high intensity vibrations to weld materials together. Electron beam welding requires a vacuum to prevent the beam from interacting with air molecules. Plasma arc welding uses a gas that is heated to an ionized condition for conduction of electric current. Stud welding involves an exothermic chemical reaction and uses a ceramic ferrule to contain the heat and prevent oxidation. Therefore, the correct matching is option D.
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