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API API-577 Welding Inspection and Metallurgy Exam Exam Practice Test

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Total 110 questions
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Welding Inspection and Metallurgy Exam Questions and Answers

Question 1

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

Options:

A.

Hammering

B.

Mechanical stress relieving

C.

Needle gunning

D.

Peening

Question 2

Which of the following is a practical solution to eliminate or reduce porosity when welding carbon steel?

Options:

A.

Reduce travel speed

B.

Proper shielding

C.

Lower heat input

D.

Arc length control

Question 3

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

Options:

A.

It is more sensitive to drafts and wind than GMAW.

B.

It has lower deposition rates than SMAW.

C.

Shielding must always be provided by an externally supplied gas.

D.

Large volumes of welding fumes are generated.

Question 4

Refer to the following diagram:

Question # 4

Item#4 represents:

Options:

A.

bevel face.

B.

bevel angle.

C.

groove angle.

D.

groove face.

Question 5

What is the Brinell hardness limit value for 1-1/4 Cr -1/2 Mo steel in refining service?

Options:

A.

200

B.

215

C.

225

D.

241

Question 6

API Recommended Practice 2201 primarily covers the:

Options:

A.

WPS/PQR aspects of in-service welding.

B.

Technical aspects of hot tapping.

C.

Safety aspects of in-service welding.

D.

Weldability aspects of in-service welding.

Question 7

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

Options:

A.

Equipment is simple, inexpensive, and portable.

B.

The slag supports and shapes the weld bead.

C.

There is a reduced requirement for ventilation.

D.

There is minimal postweld cleanup.

Question 8

Which of the following is a practical solution that could prevent or reduce lack of fusion in carbon steel during the weld process?

Options:

A.

Reduce travel speed

B.

Provide proper heat input

C.

Avoid excessive weaving

D.

Use proper joint design

Question 9

What is(are) the most appropriate action(s) to prepare an in-service carbon steel piping system that has been in caustic service for welding?

Options:

A.

Neutralize and clean the surface within 6 in. (150 mm) of weld bevels

B.

Steam out the piping system and dry

C.

Verify with pH paper that any surface liquid is “basic"

D.

Grind the surfaces near the bevel to remove contaminants

Question 10

The simplest weldability tests are those that evaluate:

Options:

A.

Porosity and slag inclusions of the weld.

B.

Cracking and corrosion resistance of the weld.

C.

Strength and ductility of the weld.

D.

Ductility and hardness of the weld.

Question 11

What is the major cause of lack of fusion in all welding processes involving carbon steel?

Options:

A.

Inadequate preheat

B.

Improper welding speed

C.

Improper heat input and improper welding technique

D.

Not using a low hydrogen electrode or improper shielding

Question 12

The change in shape (deformation) that a test specimen experiences when it is stressed or loaded is called:

Options:

A.

Yield.

B.

Strain.

C.

Stress.

D.

Plasticity.

Question 13

What does an AWS classification number identify?

Options:

A.

Electrode diameter and strength

B.

Electrodes and welding rods

C.

Chemical composition of the deposited weld metal

D.

Base metal and group number

Question 14

What is the most capable NDE method for finding a discontinuity such as incomplete fusion in a joint?

Options:

A.

MT

B.

UT

C.

ET

D.

RT

Question 15

The carbon equivalent formula indicates:

Options:

A.

Whether postweld heat treatment (PWHT) will be needed.

B.

Whether preheat will be needed.

C.

The theoretical carbon content of a steel.

D.

The weldability of a steel, based on carbon content.

Question 16

When welding using the shielded metal arc welding (SMAW) process, which of the following best describes the appearance of excessive penetration on a radiograph?

Options:

A.

A lighter density in the center of the width of the weld image, either extended along the weld or in isolated circular drops.

B.

An irregular darker density near the center of the width of the weld image along the edge of the root pass image.

C.

An abrupt density change across the width of the weld image with a straight longitudinal darker density line at the center of the width of the weld image along the edge of the density change.

D.

A localized darker density with fuzzy edges in the center of the width of the weld image.

Question 17

The deflection of an arc from its normal path that is a result of magnetic forces is referred to as:

Options:

A.

Arc drift.

B.

Arc strike.

C.

Arc blow.

D.

Arc deflection.

Question 18

Stud arc welding is a specialized process predominantly limited to welding:

Options:

A.

Non-load-bearing welds.

B.

Insulation and refractory pins.

C.

Flat position welds.

D.

Non-pressure-containing welds.

Question 19

Where is the weld HAZ assumed to be for purposes of hardness testing?

Options:

A.

0.25 inch on either side of the fusion zone

B.

0.25 inch away from the toe of the weld into the base metal

C.

1 inch on either side of the centerline of the weld

D.

Just adjacent to the toe of the weld

Question 20

If an individual changes an essential variable in the WPS, the individual must:

Options:

A.

Re-qualify the PQR.

B.

Re-qualify the WPS.

C.

Record the change on the existing WPS.

D.

List the change as a supplement to the WPS.

Question 21

For hot tap and in-service welding, above what carbon equivalent limit is it recommended to use extra low hydrogen electrodes to weld carbon steels?

Options:

A.

0.30%

B.

0.35%

C.

0.42%

D.

0.48%

Question 22

A limitation of a stud arc welding (SW) process is:

Options:

A.

Welding rates are significantly lower than those obtained with SMAW.

B.

Process is primarily suitable for only carbon steel and low alloy steels.

C.

Process is limited to a flat position.

D.

Weld is not visible during the welding process.

Question 23

If a test specimen from a welded coupon should fail during PQR mechanical tests:

Options:

A.

Three out of four of the required test specimens must pass.

B.

The test coupon fails and a new coupon is required.

C.

Two additional test specimens from the coupon must be tested and pass.

D.

The WPS fails.

Question 24

Which welding process has been associated most with lack of fusion with shop-fabricated piping?

Options:

A.

GMAW-S

B.

GMAW-SF

C.

FCAW

D.

FCAW-SW

Question 25

P-numbers are based on which of the following?

Options:

A.

Comparable base metal characteristics

B.

Weldability characteristics of base metal

C.

Electrode characteristics

D.

Chemical composition of the base metal

Question 26

In alloy steel, a high hardness measurement could indicate:

Options:

A.

A correlation to a low tensile strength.

B.

The presence of untempered martensite.

C.

The Brinell test device was struck too hard with the hammer.

D.

The presence of tempered martensite.

Question 27

To reduce exposure to moisture of low-hydrogen electrodes after they have been removed from the manufacturer’s packaging, they should be stored:

Options:

A.

Under low humidity conditions.

B.

In warm holding ovens.

C.

In sealed plastic containers.

D.

In tightly sealed ovens.

Question 28

General awareness of metallurgy is important to the welding inspector because:

Options:

A.

Welding processes can affect both mechanical and corrosion properties of a weldment.

B.

The crystalline structure of base metals affects the resulting structure of the weld.

C.

Physical properties of the final weldment can be significantly affected by preheat and postweld heat treatment (PWHT).

D.

A thorough knowledge of weld metal structures is necessary to understand weldability.

Question 29

Which of the following is used to determine the soundness and ductility of a groove weld?

Options:

A.

Ductility test

B.

Guided bend test

C.

Notch toughness test

D.

Tension test

Question 30

Which of the following is a hazard associated with in-service welding on a carbon steel pipe containing chlorine?

Options:

A.

Explosion or unstable reaction with the addition of localized heat.

B.

Exothermic decomposition or explosion.

C.

Carbon steel will burn in the presence of chlorine and high heat.

D.

Hydrogen released during welding process can initiate hydrogen-assisted cracking.

Question 31

The weld symbol represents which type of weld groove?

Question # 31

Options:

A.

Parallel

B.

Scarf

C.

Flare

D.

Bevel

Question 32

Heating a round bar to an elevated temperature and then quenching one end is a test method to determine:

Options:

A.

Hardenability.

B.

Temper embrittlement.

C.

Heat treatability.

D.

Thermal conductivity.

Question 33

Which of the following statements concerning electrode storage in ovens is true?

Options:

A.

Electrodes should never be stored in an oven that is used for food storage.

B.

Low-hydrogen electrodes may be stored in ovens with cellulose-based electrodes, but must be in their original, unopened containers.

C.

Electrode ovens should be heated by any means, but must have automatic heat controls and visible temperature indicators.

D.

Low-hydrogen electrodes should never be stored with stainless-steel electrodes.

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