MCQ - TNPSC JTO
JTO - 440 - Welder
440 - Unit VIII Arc Welding Electrode
65)
Cobalt-based alloy electrodes are used in:
A.
B.
C.
D.
66)
Weldability refers to:
A.
B.
C.
D.
67)
Which has the best weldability?
A.
B.
C.
D.
68)
High carbon steels are difficult to weld because:
A.
B.
C.
D.
69)
Aluminium welding difficulty is due to:
A.
B.
C.
D.
70)
Cast iron has poor weldability due to:
A.
B.
C.
D.
71)
Copper welding is difficult because of:
A.
B.
C.
D.
72)
Which metal requires special preheating for welding?
A.
B.
C.
D.
73)
Best welding method for stainless steel:
A.
B.
C.
D.
74)
Which of the following metals is most prone to hydrogen cracking?
A.
B.
C.
D.
75)
Low alloy steels have weldability:
A.
B.
C.
D.
76)
Preheating before welding is done to:
A.
B.
C.
D.
77)
Preheating helps to:
A.
B.
C.
D.
78)
Common preheating method:
A.
B.
C.
D.
79)
Preheat temperature for high carbon steel is generally:
A.
B.
C.
D.
80)
Preheating cast iron is necessary to:
A.
B.
C.
D.