Which one of the following is an advantage of welded connection?
- ANoise produced in welding process is relatively less.Correct
- BProper welding in field condition is difficult.
- CThe inspection of welded joint requires non-destructive testing.
- DThere is a greater possibility of brittle fracture in welding.
Solution
Concept
Welding makes much less noise than riveting, so this is an advantage. The other options are disadvantages of welding.
Step-by-step solution
1. Check each option: is it an advantage or a disadvantage? 2. Less noise than riveting is an advantage. 3. Difficult field welding, need for NDT, and brittle fracture risk are disadvantages. 4. Answer is A.
Explanation
Riveting needs hammering, so it is very noisy. Welding is a quiet process, so it is an advantage. All other options describe problems with welding.
Why the other options are wrong
B: Difficult field welding is a disadvantage. C: Needing costly NDT for inspection is a disadvantage. D: Higher chance of brittle fracture is a disadvantage.
Shortcut
Pick the only positive statement; the rest are drawbacks.
Common mistake
Choosing a true statement about welding without checking whether it is an advantage.
Correct answer: A) Noise produced in welding process is relatively less.