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: Apr 29, 2026

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Question 1

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

Question 2

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 3

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 4

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 5

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

Page: 1 / 23

Total 112 Questions | Updated On: Apr 29, 2026

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