api api-577 practice test

Which of the following can result from residual magnetism left in a partially completed weld?

• A. Excessive distortion
• B. Tendency of weld pool to be sluggish
• C. Deflection of the weld arc
• D. Solidification cracking

What is the major cause of lack of fusion in all welding processes involving carbon steel?

• A. Inadequate preheat
• B. Improper welding speed
• C. Improper heat input and improper welding technique
• D. Not using a low hydrogen electrode or improper shielding

What is(are) the most appropriate action(s) to prepare an in-service carbon steel piping system that
has been in caustic service for welding?

• A. Neutralize and clean the surface within 6 in. (150 mm) of weld bevels
• B. Steam out the piping system and dry
• C. Verify with pH paper that any surface liquid is “basic"
• D. Grind the surfaces near the bevel to remove contaminants

Which welding process produces a fast-freezing weld pool and is generally suited for joining thin
sections or root passes?

• A. GMAW-S
• B. GTAW
• C. GMAW
• D. FCAW

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

• A. The entire radiograph minus 2 in. (50.8 mm) from the edges
• B. Only the area of contrasting density
• C. The specific portion of a radiograph that needs to be evaluated
• D. The portion that is less than 3t from the center of the radiograph, where t is the thickness of the weld

Which of the following has the lowest range of welding currents and electrode diameters associated
with the GMAW process?

• A. Short circuiting transfer
• B. Pulsed droplet transfer
• C. Globular transfer
• D. Spray transfer

To reduce exposure to moisture of low-hydrogen electrodes after they have been removed from the
manufacturer’s packaging, they should be stored:

• A. Under low humidity conditions.
• B. In warm holding ovens.
• C. In sealed plastic containers.
• D. In tightly sealed ovens.

The direction of magnetic flux can be confirmed by the use of a:

• A. Pie gauge.
• B. Magnetic-field-sensitive crayon.
• C. Flux line sensitizer.
• D. Calibration gauge.

Which of the following is a commonly accepted limitation of flux core arc welding (FCAW)?

• A. It is more sensitive to drafts and wind than GMAW.
• B. It has lower deposition rates than SMAW.
• C. Shielding must always be provided by an externally supplied gas.
• D. Large volumes of welding fumes are generated.

What is the minimum liquid level that should be maintained above the area that is to be hot tapped
on a storage tank or vessel?

• A. 1 ft. (300 mm)
• B. 2 ft. (600 mm)
• C. 3 ft. (900 mm)
• D. 4 ft. (1200 mm)