Question

the following 10 questions are true or false select the appropriate answer
all electrodes are designed to be used with any of the three polarities?
true
false
question 18
4 pts
after welding the root pass, there is no danger of burn-through?
true
false

Explanation:

First Question (All electrodes...):

Electrodes have specific polarity requirements (e.g., some for DCEN, DCEP, or AC), not all work with any three polarities. So the statement is false.

Even after root pass welding, improper heat input or technique in subsequent passes can still cause burn - through. So the statement is false.

Answer:

False

Second Question (After welding root pass...):