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API-577 API Welding Inspection and Metallurgy Exam Free Practice Exam Questions (2025 Updated)

Prepare effectively for your API API-577 Welding Inspection and Metallurgy Exam certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 110 questions

In hardness testing of carbon steel weldment specimens, there is an approximate relationship between hardness and:

A.

Toughness

B.

Tensile strength

C.

Ductility

D.

Yield strength

A welding engineer or inspector should be notified when a weld has failed a weld quality test more than how many times in order to help determine the cause of the test failure?

A.

ONCE

B.

TWICE

C.

THREE TIMES

D.

FOUR TIMES

At least how far on each side of the weld should preheat be maintained?

A.

2 in. (5.1 cm)

B.

3 in. (7.6 cm)

C.

4 in. (10.2 cm)

D.

6 in. (15.2 cm)

One limitation of a shielded metal arc welding (SMAW) process is that:

A.

Deposition rates are lower than GMAW.

B.

The process cannot be used in areas of limited access.

C.

It has low tolerance for contaminants.

D.

The process is sensitive to wind and draft.

Which of the following is the test that can measure most aspects of weldability?

A.

Impact testing

B.

There is no single test

C.

Weld tension tests

D.

Bend testing

Filler metals are grouped according to their A-numbers to:

A.

Minimize the number of performance qualifications.

B.

Minimize the number of welding procedure qualifications.

C.

Define the welding characteristics.

D.

Designate similar chemical compositions.

Eddy current can be used to measure the:

A.

Thickness of parent metal below alloy metal claddings.

B.

Thickness of surface coatings or cladding thickness.

C.

Extent of bonding of coatings or claddings.

D.

Holidays in coatings or claddings.

Hardness testing of production welds and the HAZ requires test areas to be:

A.

Ground to a smooth contour.

B.

Cleaned down to the bare metal.

C.

Cleaned to remove surface scale and flux.

D.

Clean, flat area or even flush with the base metal.

Items to be included in the PQR for the SMAW process are:

A.

Welding process used and AWS classification numbers.

B.

Welding process used and P-numbers of coupon welded.

C.

P-numbers of coupon welded and AWS classification numbers.

D.

Electrode-flux class and electrical characteristics.

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

Which term is used to describe a groove melted into the base metal adjacent to the weld toe or weld root and left unfilled by weld metal?

A.

Longitudinal groove

B.

Incomplete fusion

C.

Under fill

D.

Undercut

To avoid burn through during in-service welding on thinner wall equipment, it is generally recommended to:

A.

Use larger diameter electrodes.

B.

Minimize weaving the bead.

C.

Maximize weaving the bead.

D.

Use high heat input.

The size and width of the weld HAZ is dependent upon:

A.

The properties of the base metal.

B.

The thickness of the metal.

C.

The residual hardness of the weld joint.

D.

The heat input during welding.

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Total 110 questions
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