MCQ - TNPSC JTO
JTO - 440 - Welder
440 - Unit V Arc Welding Positions
65)
Which polarity reduces spatter in welding?
A.
B.
C.
D.
66)
MIG welding of steel is usually done with:
A.
B.
C.
D.
67)
In DCEN, electrons travel from:
A.
B.
C.
D.
68)
Which polarity is also called electrode negative?
A.
B.
C.
D.
69)
Which polarity is best for welding magnesium?
A.
B.
C.
D.
70)
Polarity affects:
A.
B.
C.
D.
71)
A common destructive test for weld quality is:
A.
B.
C.
D.
72)
A non-destructive test using liquid to reveal surface cracks is:
A.
B.
C.
D.
73)
Porosity in welds is caused by:
A.
B.
C.
D.
74)
Slag inclusion occurs due to:
A.
B.
C.
D.
75)
Cracks in weld are caused by:
A.
B.
C.
D.
76)
Undercut is:
A.
B.
C.
D.
77)
The best method for internal defect detection is:
A.
B.
C.
D.
78)
The root cause of spatter is:
A.
B.
C.
D.
79)
Visual inspection of welds is:
A.
B.
C.
D.
80)
Radiography detects:
A.
B.
C.
D.