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MCQ - Mechanical TNPSC JTO
JTO - 436 - Fitter - 436 - Unit IV Welding

126)   

Which welding defect is caused by low current or fast travel speed?

A.
B.
C.
D.
Answer: A
127)   

Gas pockets trapped inside weld metal cause:

A.
B.
C.
D.
Answer: A
128)   

Which defect occurs if slag is not removed properly between weld passes?

A.
B.
C.
D.
Answer: A
129)   

Excessive welding current may cause:

A.
B.
C.
D.
Answer: A
130)   

Which NDT (Non-Destructive Test) is used to detect surface cracks in welds?

A.
B.
C.
D.
Answer: A
131)   

Radiographic testing is used to detect:

A.
B.
C.
D.
Answer: A
132)   

Ultrasonic testing of welds is based on:

A.
B.
C.
D.
Answer: A
133)   

Spatter in arc welding is caused mainly by:

A.
B.
C.
D.
Answer: A
134)   

Crater cracks usually occur due to:

A.
B.
C.
D.
Answer: A
135)   

In destructive testing of welds, the specimen is:

A.
B.
C.
D.
Answer: A
136)   

The most commonly used joint in arc welding is:

A.
B.
C.
D.
Answer: A
137)   

In thin sheet metal welding, which joint is mostly used?

A.
B.
C.
D.
Answer: A
138)   

A “Tee” joint is formed when:

A.
B.
C.
D.
Answer: A
139)   

A corner joint is commonly used in:

A.
B.
C.
D.
Answer: A
140)   

Edge joints are suitable for:

A.
B.
C.
D.
Answer: A
141)   

The coating on electrodes serves to:

A.
B.
C.
D.
Answer: A
142)   

Basic coated electrodes are used mainly for:

A.
B.
C.
D.
Answer: A
143)   

If electrodes absorb moisture, it may cause:

A.
B.
C.
D.
Answer: A
144)   

Electrodes should be stored in:

A.
B.
C.
D.
Answer: A
145)   

Re-drying of electrodes is necessary to:

A.
B.
C.
D.
Answer: A
146)   

For thin sheet welding, preferred electrode size is:

A.
B.
C.
D.
Answer: A
147)   

E6013 electrode is mainly used for:

A.
B.
C.
D.
Answer: A
148)   

Electrode classification “E6013” – here “60” indicates:

A.
B.
C.
D.
Answer: A
149)   

Electrode classification “E6013” – the last two digits “13” indicate:

A.
B.
C.
D.
Answer: A
150)   

Before use, electrodes should be checked for:

A.
B.
C.
D.
Answer: A