API API-577 Exam Questions Free Practice Test

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Questions # 21:

What is the maximum temperature at which ACFM may be used?

Options:

300°F (150°C)

500°F (260°C)

900°F (480°C)

1000°F (540°C)

Expert Solution

Questions # 22:

What is the "area of interest" on a weld radiograph?

Options:

The entire radiograph minus 2 in. (50.8 mm) from the edges

Only the area of contrasting density

The specific portion of a radiograph that needs to be evaluated

The portion that is less than 3t from the center of the radiograph, where t is the thickness of the weld

Expert Solution

Questions # 23:

Which of the following is a practical solution that could prevent or reduce lack of fusion in carbon steel during the weld process?

Options:

Reduce travel speed

Provide proper heat input

Avoid excessive weaving

Use proper joint design

Expert Solution

Questions # 24:

Which of the following is a hazard associated with in-service welding on a carbon steel pipe containing chlorine?

Options:

Explosion or unstable reaction with the addition of localized heat.

Exothermic decomposition or explosion.

Carbon steel will burn in the presence of chlorine and high heat.

Hydrogen released during welding process can initiate hydrogen-assisted cracking.

Expert Solution

Questions # 25:

If a nonessential variable is changed on a WPS, which of the following actions must occur?

Options:

The welding inspector can simply make the change on the WPS and initial as proof of acceptance.

It may be changed on the WPS without requalifying the welding procedure.

The welding procedure will need to be requalified by performing mechanical testing.

Impact testing must be performed at the discretion of the welding engineer.

Expert Solution

Questions # 26:

When verifying that the filler metal selection is appropriate for the base metal being welded, an inspector should consider:

Options:

Chemical composition.

Tensile strength to be higher than the base metal.

Acceptability of physical properties.

Need for postweld heat treatment (PWHT).

Expert Solution

Questions # 27:

What term is used to describe the mechanical working of metals using impact blows?

Options:

Hammering

Mechanical stress relieving

Needle gunning

Peening

Expert Solution

Questions # 28:

Which source of radiation is normally used for performing field radiography on steel with a 4-in. thickness?

Options:

Selenium 75

Cobalt 60

Iridium 192

X-ray machine

Expert Solution

Questions # 29:

The simplest weldability tests are those that evaluate:

Options:

Porosity and slag inclusions of the weld.

Cracking and corrosion resistance of the weld.

Strength and ductility of the weld.

Ductility and hardness of the weld.

Expert Solution

Questions # 30:

As a result of welding, metals with a high coefficient of thermal expansion are:

Options:

More susceptible to distortion during welding.

Less susceptible to cracking during welding.

More susceptible to brittle fracture.

Less susceptible to brittle fracture.

Expert Solution

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