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

1)   

Which of the following is NOT a type of flux coating in electrodes?

A.
B.
C.
D.
Answer: D
2)   

The main purpose of flux coating in an electrode is to:

A.
B.
C.
D.
Answer: B
3)   

Rutile coated electrodes contain mainly:

A.
B.
C.
D.
Answer: B
4)   

Basic coated electrodes are mainly used for:

A.
B.
C.
D.
Answer: B
5)   

The flux coating helps to prevent:

A.
B.
C.
D.
Answer: B
6)   

Which element in flux coating improves arc stability?

A.
B.
C.
D.
Answer: A
7)   

Cellulosic coated electrodes are preferred for:

A.
B.
C.
D.
Answer: A
8)   

Slag formation from flux coating:

A.
B.
C.
D.
Answer: A
9)   

Hydrogen-controlled electrodes have coating type:

A.
B.
C.
D.
Answer: A
10)   

Which flux type produces the smoothest weld bead?

A.
B.
C.
D.
Answer: A
11)   

Coating factor is defined as:

A.
B.
C.
D.
Answer: B
12)   

If an electrode core diameter is 4 mm and coated diameter is 6 mm, the coating factor is:

A.
B.
C.
D.
Answer: B
13)   

A higher coating factor indicates:

A.
B.
C.
D.
Answer: A
14)   

Coating factor for heavily coated electrodes is generally:

A.
B.
C.
D.
Answer: C
15)   

Thinly coated electrodes are mostly used in:

A.
B.
C.
D.
Answer: B
16)   

The size of an electrode is specified by:

A.
B.
C.
D.
Answer: C
17)   

Common electrode diameters used in manual arc welding are:

A.
B.
C.
D.
Answer: B
18)   

Larger diameter electrodes are used for:

A.
B.
C.
D.
Answer: B
19)   

Electrode length for manual arc welding is typically:

A.
B.
C.
D.
Answer: B
20)   

For welding thin sheet metal, the suitable electrode diameter is:

A.
B.
C.
D.
Answer: A
21)   

In BIS coding, the letter ‘E’ in E6013 stands for:

A.
B.
C.
D.
Answer: A
22)   

In AWS code E6013, ‘60’ represents:

A.
B.
C.
D.
Answer: A
23)   

The ‘1’ in E6013 indicates:

A.
B.
C.
D.
Answer: B
24)   

The last two digits in AWS electrode code indicate:

A.
B.
C.
D.
Answer: A
25)   

In BIS code, ‘E’ is followed by:

A.
B.
C.
D.
Answer: A