Free API API-577 Exam Questions

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

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Total 112 Questions | Updated On: Oct 27, 2025

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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

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

A : Hammering

B : Mechanical stress relieving

C : Needle gunning

D : Peening

Answer: D

Question 3

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 4

What is the purpose of the IQI?

A : Determining that the required sensitivity of the radiograph is achieved

B : Marking the radiographs with a definite identifying characteristic

C : Ascertaining how much radiation the source has penetrated the material

D : Establishing the depth that the radiation source penetrates

Answer: A

Question 5

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

Page: 1 / 23

Total 112 Questions | Updated On: Oct 27, 2025

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