MCQ - TNPSC JTO
JTO - 440 - Welder
440 - Unit II Different Process of Metal Joining Methods
49)
Polarity in DC welding affects
A.
B.
C.
D.
50)
In arc welding, resistance is important because
A.
B.
C.
D.
51)
The SI unit of heat energy is
A.
B.
C.
D.
52)
The SI unit of temperature is
A.
B.
C.
D.
53)
Specific heat is defined as
A.
B.
C.
D.
54)
Latent heat of fusion is
A.
B.
C.
D.
55)
In welding, preheating is done to
A.
B.
C.
D.
56)
Heat input in welding is calculated as
A.
B.
C.
D.
57)
Thermal conductivity is the property to
A.
B.
C.
D.
58)
If heat input is too high, it may cause
A.
B.
C.
D.
59)
Interpass temperature is
A.
B.
C.
D.
60)
Post-weld heat treatment helps in
A.
B.
C.
D.
61)
Melting point is defined as
A.
B.
C.
D.
62)
The unit of specific heat in SI system is
A.
B.
C.
D.
63)
The property that resists temperature rise is
A.
B.
C.
D.
64)
Heat-affected zone (HAZ) is
A.
B.
C.
D.