Free API API-577 Exam Questions

Become API Certified with updated API-577 exam questions and correct answers

Page: 1 / 23

Total 112 Questions | Updated On: Oct 27, 2026

Add To Cart

Question 1

Crater cracks typically occur:

A : In weld metal at the point where the arc terminates.

B : In the HAZ at the point where the arc initiates.

C : In weld metal at the point where the arc initiates.

D : In the HAZ at the point where the arc terminates.

Answer: A

Question 2

One of the main differences between welding nickel alloys and austenitic stainless steels is that with nickel alloys:

A : Interpass temperature control is not needed.

B : There is less susceptibility to cracking from contaminants.

C : There is less susceptibility to lack of fusion.

D : The weld pool tends to be sluggish.

Answer: D

Question 3

A-number groupings are based upon the:

A : Chemical composition of the deposited weld metal.

B : Comparable base metal ultimate strength values.

C : Weldability characteristics of the metal.

D : Type and strength of base metal.

Answer: A

Question 4

A four-digit designation for a SMAW electrode under AWS classification uses the third digit to define the:

A : Coating characteristics.

B : Chemical composition.

C : Strength of the filler metal.

D : Welding position.

Answer: D

Question 5

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

A : Chemical composition.

B : Tensile strength to be higher than the base metal.

C : Acceptability of physical properties.

D : Need for postweld heat treatment (PWHT).

Answer: A

Page: 1 / 23

Total 112 Questions | Updated On: Oct 27, 2026

Add To Cart