AME 8 Q7

1 / 10

What is porosity in a weld produced using the covered electrode welding process?

D. A defect where the weld metal forms a series of small cracks or fissures caused by improper cooling or excessive heat.

A. A defect where gas bubbles are trapped within the weld metal, resulting in a porous structure that weakens the weld and may cause a rough surface appearance.

C. A defect where the weld exhibits a rough, uneven surface due to excessive spatter or contamination during the welding process.

B. A defect characterized by a visible separation or gap between the weld metal and the base metal, indicating poor fusion or incomplete welding.

2 / 10

What is an overlap defect in a weld produced using the covered electrode welding process?

B. A defect characterized by an irregular weld bead pattern due to inconsistent feed of the electrode or uneven heat distribution, resulting in an aesthetically unpleasing appearance.

C. A defect where the weld exhibits visible cracks or fractures caused by excessive cooling rates or improper weld parameters during the process.

A. A defect where the weld metal extends over the edge of the base metal without proper fusion, creating a pronounced ridge or lip that weakens the joint and can affect its strength.

D. A defect where the weld metal has formed a rough, porous surface due to contamination or incorrect electrode selection, leading to weak weld integrity.

3 / 10

What is spatter in a weld produced using the covered electrode welding process?

B. A defect where the weld metal forms a series of small, irregular patterns along the weld bead due to inconsistent feed of the electrode.

C. A defect characterized by a rough, uneven surface on the weld bead caused by poor arc stability and improper electrode selection.

A. Small droplets of molten metal that are expelled from the weld pool and land on the surrounding area, often due to excessive heat or improper welding parameters.

D. A defect where the weld metal shows signs of porosity, with visible gas bubbles trapped within the weld bead due to contamination.

4 / 10

What is lack of fusion in a weld produced using the covered electrode welding process?

B. A defect characterized by trapped gas bubbles within the weld metal, which leads to a porous structure and rough surface appearance.

A. A defect where there is inadequate bonding between the weld metal and the base metal, or between adjacent weld passes, resulting in a gap or separation that weakens the weld.

D. A defect involving visible fissures or separations in the weld metal, often caused by rapid cooling or high stresses.

C. A defect where non-metallic materials, such as slag or oxide, are trapped within the weld metal, compromising the weld's strength and integrity.

5 / 10

What is an undercut defect in a weld produced using the covered electrode welding process?

C. A defect characterized by the presence of bubbles or voids within the weld metal caused by trapped gases during the welding process.

A. A defect where the weld metal has formed a concave groove along the edge of the weld, creating a depression that weakens the joint and can lead to crack formation.

B. A defect where the weld has an uneven surface texture, with areas that are excessively rough or have a spongy appearance due to improper heat settings.

D. A defect where the weld metal has not properly fused with the base metal, resulting in a visible gap or separation between the weld and the surrounding material.

6 / 10

What is slag inclusion in a weld produced using the covered electrode welding process?

C. A defect where the weld bead has excessive spatter, causing irregular droplets of metal to be scattered around the weld area.

A. A defect where non-metallic slag is trapped within the weld metal, creating inclusions that weaken the weld and can affect its strength and appearance.

B. A defect characterized by a visible separation between the weld metal and base metal, often due to insufficient fusion or improper technique.

D. A defect where the weld metal has formed a series of small cracks or fissures due to rapid cooling or improper heat control.

7 / 10

What is a crater defect in a weld produced using the covered electrode welding process?

D. A defect where the weld exhibits a rough, uneven surface texture due to contamination or inconsistent electrode feed during the welding process.

C. A defect where the weld metal has not properly fused with the base metal, resulting in a visible gap or separation along the weld joint.

A. A defect where a small, deep depression forms at the end of the weld bead due to improper stopping of the welding arc, leading to a weakened area that can be prone to cracking.

B. A defect characterized by a series of small, raised areas along the weld bead caused by excessive heat or incorrect electrode angle during welding.

8 / 10

What are inclusions in a weld produced using the covered electrode welding process?

B. Defects characterized by visible gas bubbles within the weld metal, resulting in a porous structure and rough surface appearance.

D. Defects where the weld metal exhibits excessive spatter, causing irregular droplets of metal around the weld area.

A. Defects where non-metallic materials, such as slag or oxide, are trapped within the weld metal, leading to weakened weld strength and potential for failure.

C. Defects where there is a visible gap or separation between the weld metal and the base metal, indicating poor fusion or incomplete penetration.

9 / 10

What are cracks in a weld produced using the covered electrode welding process?

C. Defects involving gas bubbles trapped within the weld metal, which result in a porous structure and rough surface appearance.

B. Defects where non-metallic materials, such as slag or oxide, are trapped within the weld metal, leading to weakened weld strength and potential for failure.

A. Defects characterized by visible fissures or separations in the weld metal, caused by rapid cooling, high stresses, or improper welding parameters, which can significantly weaken the weld.

D. Defects where molten metal is expelled from the weld pool, creating irregular droplets of metal around the weld area.

10 / 10

What is lack of penetration in a weld produced using the covered electrode welding process?

C. A defect where non-metallic materials, such as slag or oxide, are trapped within the weld metal, leading to reduced weld strength and potential for failure.

B. A defect characterized by the formation of gas bubbles within the weld metal, leading to a porous structure and rough surface.

D. A defect where there are visible fissures or separations in the weld metal, often caused by rapid cooling or high stresses.

A. A defect where the weld metal does not fully penetrate the base metal, resulting in a shallow weld and poor fusion, which weakens the joint.

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