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MCQ - Mechanical TNPSC JTO
JTO - 440 - Welder - 440 - Unit VIII Arc Welding Electrode

76)   

Preheating before welding is done to:

A.
B.
C.
D.
Answer: D
77)   

Preheating helps to:

A.
B.
C.
D.
Answer: B
78)   

Common preheating method:

A.
B.
C.
D.
Answer: D
79)   

Preheat temperature for high carbon steel is generally:

A.
B.
C.
D.
Answer: B
80)   

Preheating cast iron is necessary to:

A.
B.
C.
D.
Answer: A
81)   

If preheat is not applied when required:

A.
B.
C.
D.
Answer: B
82)   

In thick sections, preheating reduces:

A.
B.
C.
D.
Answer: A
83)   

Hydrogen cracking is more likely at:

A.
B.
C.
D.
Answer: A
84)   

Preheating is generally NOT required for:

A.
B.
C.
D.
Answer: A
85)   

Preheat temperature depends on:

A.
B.
C.
D.
Answer: D
86)   

Post heating refers to:

A.
B.
C.
D.
Answer: A
87)   

Purpose of post heating:

A.
B.
C.
D.
Answer: D
88)   

Post heating temperature for hydrogen removal is generally:

A.
B.
C.
D.
Answer: B
89)   

Post heating for stress relief is often called

A.
B.
C.
D.
Answer: C
90)   

Post heating is particularly important for:

A.
B.
C.
D.
Answer: B
91)   

Skipping post heating when required can cause:

A.
B.
C.
D.
Answer: D
92)   

Post heating reduces:

A.
B.
C.
D.
Answer: A
93)   

Post heating in cast iron welding helps to:

A.
B.
C.
D.
Answer: A
94)   

Stress-relief heat treatment temperature for carbon steel:

A.
B.
C.
D.
Answer: C
95)   

During post heating, slow cooling is achieved by:

A.
B.
C.
D.
Answer: A
96)   

Interpass temperature means:

A.
B.
C.
D.
Answer: A
97)   

Maintaining correct interpass temperature prevents:

A.
B.
C.
D.
Answer: D
98)   

If interpass temperature is too high:

A.
B.
C.
D.
Answer: B
99)   

If interpass temperature is too low:

A.
B.
C.
D.
Answer: B
100)   

Monitoring interpass temperature is important especially in:

A.
B.
C.
D.
Answer: D