CSWIP 3.1- MODEL PAPER-2

2.

Undercut can be defined as one of the following?

Concavity in the root of the weld
Crater in the fill of the weld
An oxide within the weld
Depression at the toe of the weld

Correct Answer

A. Depression at the toe of the weld

Explanation

Undercut refers to a depression or groove that forms at the toe of a weld. It is caused by excessive heat or improper welding technique, resulting in the melting away of the base metal. This depression weakens the weld joint and can lead to structural failure. Therefore, the correct definition of undercut in welding is a depression at the toe of the weld.

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3.

All things contain imperfections, but is only when they fall outside the level of acceptance they should be termed?

Discontinuity
Defect
Mechanical damage
Welding imperfections

Correct Answer

A. Defect

Explanation

Defects refer to imperfections that exceed the acceptable level. While all things have imperfections, only those that fall outside the acceptable range should be considered defects. This term is used to describe flaws or faults that affect the functionality, quality, or appearance of an object. It implies that the item does not meet the required standards or specifications.

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6

4.

Excess penetration is often caused by which of the following?

Too high a welding current
Slow travel speed
Large root gap
All of the above

Correct Answer

A. All of the above

Explanation

Excess penetration in welding refers to the excessive depth of the weld pool, which can weaken the joint. It is caused by various factors, including too high a welding current, slow travel speed, and a large root gap. When the welding current is too high, it generates excessive heat, leading to excessive penetration. Similarly, a slow travel speed allows more time for the heat to be absorbed, resulting in deeper penetration. A large root gap creates a larger space for the molten metal to flow into, causing excessive penetration. Therefore, all of the above factors can contribute to excess penetration in welding.

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10

5.

A singular gas filled cavity that is= or more than 1.6 mm in diameter is termed?

Cavity
Cluster porosity
Blow hole
Rounded porosity

Correct Answer

A. Blow hole

Explanation

A singular gas filled cavity that is equal to or more than 1.6 mm in diameter is termed a blow hole.

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4

6.

What should happen to spatter before visual inspection is carried out?

Spatter is not a problem for visual inspection
Spatter that is more than 2 mm need not be cleaned for visual inspection
Spatter should be cleaned off before visual inspection
Spatter will not have any affect on the weld or the base material

Correct Answer

A. Spatter should be cleaned off before visual inspection

Explanation

Spatter should be cleaned off before visual inspection. This is because spatter, which refers to the unwanted bits of molten metal expelled during welding, can obstruct the view and make it difficult to properly assess the weld. Cleaning the spatter ensures a clear and accurate visual inspection of the weld and the base material.

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1

CSWIP 3.1- Model Paper-2

Lack of fusion imperfections are defined as?

Quiz Preview

Undercut can be defined as one of the following?

All things contain imperfections, but is only when they fall outside the level of acceptance they should be termed?

Excess penetration is often caused by which of the following?

A singular gas filled cavity that is= or more than 1.6 mm in diameter is termed?

What should happen to spatter before visual inspection is carried out?