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

26)   

E7018 electrode has tensile strength of:

A.
B.
C.
D.
Answer: B
27)   

E7018 is mainly a:

A.
B.
C.
D.
Answer: B
28)   

In AWS coding, ‘2’ in the third position (e.g., E7024) means:

A.
B.
C.
D.
Answer: A
29)   

BIS code ‘E4313’ indicates tensile strength of:

A.
B.
C.
D.
Answer: C
30)   

In AWS coding, ‘13’ in E6013 refers to:

A.
B.
C.
D.
Answer: A
31)   

Moisture pickup in electrodes mainly causes:

A.
B.
C.
D.
Answer: B
32)   

Which electrode type is most sensitive to moisture pickup?

A.
B.
C.
D.
Answer: B
33)   

Moisture pickup increases the risk of:

A.
B.
C.
D.
Answer: C
34)   

If an electrode absorbs moisture, before use it should be:

A.
B.
C.
D.
Answer: B
35)   

Moisture content in low-hydrogen electrodes should be kept below:

A.
B.
C.
D.
Answer: C
36)   

Electrodes should be stored in:

A.
B.
C.
D.
Answer: B
37)   

Ideal storage temperature for low-hydrogen electrodes is:

A.
B.
C.
D.
Answer: C
38)   

Opened packets of low-hydrogen electrodes should be used within:

A.
B.
C.
D.
Answer: B
39)   

Damaged electrode coating leads to:

A.
B.
C.
D.
Answer: B
40)   

Baking of low-hydrogen electrodes is done to:

A.
B.
C.
D.
Answer: B
41)   

For general purpose rutile electrodes, storage temperature can be:

A.
B.
C.
D.
Answer: A
42)   

Baking temperature for low-hydrogen electrodes is usually:

A.
B.
C.
D.
Answer: C
43)   

Baking duration is typically:

A.
B.
C.
D.
Answer: B
44)   

Over-baking electrodes may cause:

A.
B.
C.
D.
Answer: A
45)   

Before baking, electrodes should be:

A.
B.
C.
D.
Answer: A
46)   

If electrodes are baked at too low a temperature:

A.
B.
C.
D.
Answer: B
47)   

Baking ovens should have:

A.
B.
C.
D.
Answer: A
48)   

Electrodes should be baked:

A.
B.
C.
D.
Answer: B
49)   

For cellulosic electrodes, baking is:

A.
B.
C.
D.
Answer: A
50)   

Main reason to avoid moisture in electrodes is:

A.
B.
C.
D.
Answer: B