API-577 試験問題を無料オンラインアクセス

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

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

Refer to the following diagram:

Item#1 represents:

• A.root face.
• B.root opening.
• C.root weld size.
• D.groove weld size.

To reduce the possibility of cracking, which of the following maximum hardness levels is required for weldments in wet H2S service?

• A.HRC 32
• B.HRC 22
• C.HRC 20
• D.HRC 25

What increases when a welder increases the amperage?

• A.Arc length
• B.Heat
• C.Voltage
• D.Travel speed

The simplest weldability tests are those that evaluate:

• A.Cracking and corrosion resistance of the weld.
• B.Strength and ductility of the weld.
• C.Porosity and slag inclusions of the weld.
• D.Ductility and hardness of the weld.