AWS-CWI Welding Inspector Practice Exam Free Quiz

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1) How can hot cracks be recognized?

A) By their color at ambient temperature

B) By intergranular propagation

C) By their sharp edges

D) By their large size

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2) What type of waves does ultrasonic testing utilize?

A) Longitudinal waves

B) Radio waves

C) Electromagnetic waves

D) Infrared waves

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3) Which type of current is suitable for Shielded Metal Arc Welding (SMAW) with an electrode designated as E7018?

A) Alternating current (AC)

B) Direct current, electrode positive (DCEP)

C) Direct current, electrode negative (DCEN)

D) It can use both AC and DC currents

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4) What are X-rays?

A) Sound waves

B) Radiation emitted from an electrical device

C) Electromagnetic waves

D) Mechanical waves

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5) Atmospheres for shielding an arc may consist of:

A) inert gases, active gases, or mixtures of inert and active gases

B) only inert gases are permitted

C) only active gases are permitted

D) no gases are permitted for welding

E) none of the above

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6) What is the acronym for “light amplification by stimulated emission of radiation”?

A) MIG

B) TIG

C) LASER

D) ARC

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7) Which transducer configuration allows testing without removing weld reinforcement?

A) Longitudinal beam

B) Angle beam

C) Dual beam

D) Multi-frequency

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8) What is a limitation of electron beam welding (EBW) regarding joint positioning?

A) Joints must be accurately positioned under the beam

B) Joints must be inaccurately positioned under the beam

C) Joint positioning is irrelevant to the welding process

D) Joint positioning is needed but not crucial to the process

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9) Which problem associated with brazing results from insufficient cleaning or improper heating of parts?

A) Formation of voids or unbonded areas within the joint

B) Melting and erosion of the base metal

C) Corrosion of the base metal

D) Excessive localized heat application

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10) Which type of torch is typically used in plasma arc cutting?

A) TIG torch

B) Stick welding torch

C) MIG torch

D) Transferred arc type torch

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11) Which property describes materials that can convert mechanical energy to electrical energy?

A) Ferromagnetic

B) Piezoelectric

C) Conductive

D) Insulative

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12) What type of power source is commonly used for shielded metal arc welding?

A) Constant current power source with a "drooping" characteristic

B) Constant voltage power source with a "rising" characteristic

C) Alternating current power source with variable voltage and current

D) Direct current power source with fixed voltage and variable current

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13) What is the significant feature of Gas Tungsten Arc Welding (GTAW) regarding the electrode?

A) Not intended to be consumed during welding operation

B) Consumed during welding operation

C) Made of low melting tungsten

D) Made of pure tungsten only

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14) If the pipe wall thickness range radiographed is greater than 3/8 inch through ½ inch, what is the maximum thickness in inches of the required API ‘Figure 21’ penetrameter?

A) 0.005

B) 0.0075

C) 0.01

D) 0.0125

E) 0.015

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15) Which alloying elements, in addition to carbon, can promote the hardenability of steel?

A) None, only carbon affects hardenability

B) Manganese and chromium

C) Nickel and molybdenum

D) All alloying elements can affect hardenability

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16) What is the relationship between austenite, ferrite, bainite, and martensite microstructure?

A) Martensite can only transform from austenite, so any austenite that transforms to ferrite or bainite cannot transform to martensite

B) Martensite can transform from austenite, ferrite, and bainite

C) Austenite, ferrite, bainite, and martensite can freely transform into each other

D) None of the above

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17) SWE/SWV is the abbreviation for:

A) swage welded and extruded/swage welded and visually inspected

B) side wall examined/side wall visually inspected

C) single wall extruded/single wall visually inspected

D) single-wall exposure/single-wall viewing

E) none of the above

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18) What is the main metallurgical change that occurs during annealing?

A) Grain refinement

B) Precipitation hardening

C) Transformation to austenite

D) Stress relieving

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19) What is a key advantage of using fluorescent penetrants?

A) They are easier to apply

B) They are less expensive

C) They provide more sensitive tests

D) They require less dwell time

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20) What type of coil is used for evaluating surfaces in eddy current testing?

A) Inside diameter coil

B) Cylindrical coil

C) Probe type coil

D) Flat coil

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21) What happens to the magnetic field at a discontinuity in a magnetized part?

A) It disappears

B) It creates opposite poles

C) It strengthens

D) It weakens

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22) For pipe with an outside diameter greater than or equal to 2 3/8 inches, isolated slag inclusions (ISI) found by NDT shall be unacceptable when:

A) the aggregate length of ISI indications exceeds 4 inches in any continuous 12 inch weld length

B) the aggregate length of ISI indications exceeds 3 inches in any continuous 12 inch weld length

C) the aggregate length of ISI indications exceeds 2 inches in any continuous 12 inch weld length

D) the aggregate length of ISI indications exceeds 1 inch in any continuous 12 inch weld length

E) the aggregate length of ISI indications exceeds 1/2 inch in any continuous 12 inch weld length

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23) Why is the final weld layer typically not peened?

A) To prevent masking of discontinuities during inspection

B) To ensure the final layer is not over-deformed

C) To maintain the desired weld profile

D) To increase the strength of the final layer

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24) What is required for ultrasonic testing to determine the location and size of discontinuities?

A) A digital display only

B) An oscilloscope or digital display

C) A thermometer

D) A microscope

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25) When should visual inspection be performed?

A) Only after welding

B) Before, during, and after welding

C) Only before welding

D) Only during the final inspection

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26) A welder shall be requalified whenever which of the following occurs?

A) A change from vertical uphill to vertical downhill

B) A change of filler metal classification from group 1 to group 3

C) A change from one process to another

D) When all of the above change at the same time

E) All of the above

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27) A welder who successfully completes the qualification in Section 6.2-1 on 8 inch, schedule 40 pipe (0.322″ wall) shall be requalified?

A) the welding process is changed from SMAW to GMAW

B) the welder changes the welding direction from horizontal left to horizontal right

C) there is a change in filler metal classification from Group 1 or 2 to Group 3

D) the welder welds on 6 inch, schedule 40 (0.280” wall) pipe

E) a and c above

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28) How are discontinuities classified based on their dimensions?

A) Large and small

B) Linear and nonlinear

C) Major and minor

D) Acceptable and unacceptable

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29) Which advantage of metal cored wires contributes to the creation of a broader, bowl-shaped arc cone in gas metal arc welding (GMAW)?

A) High deposition rates

B) No slag and almost no spatter

C) Ability to bridge gaps without burn through

D) Excellent side wall fusion and root penetration

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30) Welding may be done by which of the following processes:

A) SAW

B) SMAW

C) GTAW

D) GMAW

E) all of the above

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31) What is the purpose of calibration blocks in ultrasonic testing?

A) To change the sound frequency

B) To measure the temperature

C) To calibrate the ultrasonic unit

D) To enhance signal strength

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32) What is one of the advantages of gas metal arc welding (GMAW) over shielded metal arc welding (SMAW)?

A) Reduced likelihood of slag inclusions due to the absence of flux

B) Greater portability and simplicity in equipment setup

C) Higher welding speed resulting in increased productivity

D) Enhanced arc stability and control due to the use of constant current power sources

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33) How often shall levels I and II NDT personnel be recertified?

A) Every year

B) Every 2 years

C) At least every 3 years

D) At the chief inspector’s option

E) As specified in the contract

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34) What welding technique is commonly employed with PAW to achieve full penetration welds in thick materials?

A) Fillet welding

B) Groove welding

C) Keyhole welding

D) Spot welding

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35) What is the purpose of the “4T” hole in a #25 IQI?

A) To indicate film exposure time

B) To verify film resolution sensitivity

C) To identify the test object

D) To enhance image quality

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36) What is one limitation of plasma arc cutting (PAC)?

A) Small kerf and square cut edges

B) Low cutting speeds

C) Large kerf and non-square cut edges

D) Limited applicability to carbon steels

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37) What effect does carbon have on oxyfuel cutting of steels?

A) Facilitates cutting

B) Causes hardening and cracking

C) Improves surface finish

D) Increases cutting speed

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38) Pipe ends of the same thickness should not be offset by more than:

A) 1/16 in.

B) 1/32 in.

C) 1/8 in.

D) 1/4 in.

E) No offset is permitted

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39) What aspect of NDE symbols aids in communication between inspectors and production teams?

A) They are color-coded

B) They use complex terminology

C) They serve as shorthand

D) They are only used in reports

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40) Why might alternating current (AC) be preferred for testing rough surfaces?

A) It is cheaper

B) It provides greater mobility

C) It is easier to use

D) It requires less power

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41) When preparing a tensile specimen for testing:

A) A notch approximately 1/8” shall be cut into each of the weld

B) The specimen must be machined

C) May be oxygen cut with no further preparation provided sides all parallel and smooth

D) Weld reinforcement should not be removed on either side

E) Both C&D

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42) Upon visual detection of a weld defect, what should the inspector do?

A) Send it to production for repair

B) Have it removed from the line-unless permitted by 9.3.10

C) Submit it for additional nondestructive testing

D) A&C above

E) Send it to the company representative

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43) What is a common result of crater cracks?

A) They improve weld strength

B) They can propagate further

C) They have no impact

D) They are easily repaired

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44) How is the heat applied during welding?

A) The heat is applied evenly across the entire bar

B) The heat is applied only to the top of the bar

C) The heat is applied only to the bottom of the bar

D) The heat is applied intermittently at different locations

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45) Which organization publishes a document on personnel certification used by this code?

A) API

B) ASNT

C) AWS

D) BSI

E) NACE

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46) In table 6, the penetrameter to use to test pipe with a 0.432-in. wall thickness is identified by what number?

A) 5

B) 10

C) 11

D) 15

E) 17

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47) How does the presence of copper affect oxyfuel cutting?

A) Facilitates cutting

B) Requires special preheating

C) Reduces cutting speed

D) Has no effect in usual amounts

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48) What does the CCT (Continuous Cooling Transformation) diagram show?

A) Microstructural products as a function of temperature and time

B) Changes during continuous cooling from austenitic range

C) Both A and B

D) Neither A nor B

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AWS-CWI Welding Inspector Practice Exam Free Quiz

Free AWS-CWI Practice Exam

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