Practice Test 1 Flashcards
DWE/SWV
Which brazing filler metal can be used with all alloys?
BAg
Which discontinuity cannot be used by traveling too fast?
Porosity
Internal Undercut
Which gases may be used for shielding when using the GTAW process?
Argon and Helium
1G
What doesn’t necessarily increase the deposition rate?
Increased Voltage
PT developer times are usually in the range of:
10 minutes
Minimum penetrant dwell times are usually:
5-60 minutes
What class of fire extinguisher is ordinary combustibles such as wood and paper?
A
Arc blow can be caused by:
Improper grounding
Whose responsibility is it to verify and keep inspection records?
The company
The amount of amperage used for magnetic particle inspection using prods is based on the distance between the prods and the:
Thickness of the part
The LEL for acetalyne is
2.5%
Which of the following is not an example of a standard finishing method?
Drilling
At 12 inches, the normal visual acuity of the human eye is:
.003 inches wide
The two common types of welding arc blow are:
Thermal and magnetic
The suggested format for inspection reports can be found:
In the annex of the code being followed
High alloy steels have alloying levels in access of:
10%
Which of the following materials cannot be tested by magnetic particle techniques?
Copper alloys
A rolled plate will have the highest tensile strength in which direction?
In the direction of rolling
Welding shirts should be made of which of the following materials?
Chemically treated cotton
Bend test specimen may be taken and prepared in all of the following ways except:
Longitudinal root and face
Prequalified WPS’s are filled out in accordance with which code or standard?
AWS D1.1
Which type of screen presentation displays the amount of received ultrasonic energy as a function of time?
A-scan
Lead
In, GMAW, the “cast” of the wires refers to what?
The natural curve of the wire
The welding inspector may do all of the following except:
To whom is the inspectors first responsibility?
The public
Test have shown that welding fume control is more effective when the air flow is
Across the face of the welder
The reference line and arrow, along with any other elements used to convey specific welding information, is known as the _________ symbol:
Welding
Why should acetalyne cylinder valves never be opened more than one full turn?
So that it may be closed quickly
Which of the following amperages would be appropriate for making a fillet weld on 1/2 “ thick plate using 1/8” diameter 7018 electrode?
120 amps
Scarfing
None of these
Which of the following terms does not specify the direction of travel when welding?
Overhand
The melting point of carbon steel is how many degrees Fahrenheit?
2,780
Who’s responsibility is it to ensure that the welding procedures have been properly qualified?
The welding inspector
Low alloy steels commonly have an alloy range of:
1-5%
The light intensity required for critical visual inspection is:
A minimum of 100 foot-candles
Which of the following gases cannot be used for TB?
Nitrogen
5F
.565 inches
Single pass welds only
A broken surface is being observed. A small pore or inclusion type discontinuity appears as a round bright area. Which of the following best defines this discontinuity?
Fisheye
3
In order to generate measurable eddy currents in a test specimen, the specimen must be:
An electrical conductor
Combustible metal fires can be extinguished with what class of fire extinguisher?
D
Eddy currents are circulating electrical currents induced in conductive materials by:
An alternating magnetic field
Which code governs the qualification of procedures and welders for boiler and pressure vessels?
ASME Sec. IX
A welder may be tested by all but which of the following means?
Charpy impact test
A selective soldering process where two pre-fluxed, solder coated parts are heated with a heating element to a temperature to melt the solder is called:
Hot-bar reflow soldering
Excessive spatter on a weldment may be caused by all of the following except:
Excessive amperage
When an NDE technician rejects a weld, the welding inspector should:
Review the results
Whose responsibility is it to ensure that welding procedures have been properly qualified?
The welding inspector
For a manual welding process, a decrease in arc length will cause:
A decrease in voltage
In which magnetizing method is the current passed directly through the part, thereby setting up a magnetic field at right angles to the current flow?
Circular magnetization
All of the following are considered an arc welding process except:
RSW
What element of the eye is analogous to the film of a camera, receiving and documenting an image of the world?
Retina
The number of cycles per second is the definition of:
Frequency
Who is involved in making a a weld inspection plan?
Quality control
Eye and face protection shall comply with:
Z87.1 NOT Z48.1
When is it acceptable to revise a Procedure Qualification Report?
Never
The individual symbols used on drawings, project specifications, and welding procedure specifications to convey design specifications for welds are known as ____________ symbols.
Weld
Where should preheat temperature be measured?
3 inches from the point of welding
Which material properties are directly related?
Strength and hardness
Which material properties are inversely related?
Strength and toughness
If there is no dimension on the left of a groove weld symbol, the weld:
Extends the full thickness of the joint
Which of the following cannot cause embrittlement in carbon steels?
Argon and carbon dioxide
Which best describes the operation where a welder or welding operator has control of a molten weld pool using a side to side motion that is transverse to the travel direction?
Weaving
What cable size is required for a 50ft long, 200 amp, copper welding lead?
2
It is determined that a welding procedure is creating an excessive heat input. Which of the following changes would not result in a reduction of heat input?
Decrease preheat
CJP T-joint
The welding position where both the axis of the weld and the weld face are approximately horizontal is called:
Flat
What discontinuity is shown in this radiograph?
Misalignment
A process such as air carbon arc cutting and plasma arc cutting can cause sparks to travel in excess of:
35 feet
Which test involves a tensile specimen under a constant load maintained at a constant temperature with measurements of strain recorded over a period of time?
Creep test
When using a 7018 electrode, too long of an arc length will most likely cause:
Porosity
The fusion welding process in which the filler metal is resistance heated by current flowing through the wire as it is fed into the weld pool is referred to as:
Hot wire welding
Of the following, which may be considered mandatory?
Codes, standards, and specifications
Ventilation should not produce more than approximately:
100 FPM at the work
Square is not a contour finish
Subjecting a part to a magnetic field that is constantly reversing polarity and gradually diminishing in strength accomplishes which of the following?
Demagnetizes the part
Which material properties are directly related?
Ductility and Toughness
A soldering discontinuity that has a crystalline structure that may grow from mostly pure tin or zinc on finished surfaces is referred to as:
Tin whiskers
The commonly used flux in brazing and braze welding of ferrous metals is:
Borax
Which welding process may use a constant current?
SMAW, SAW, GTAW and SAW
All of these
Magnetic lines of force (magnetic fields) are oriented in what direction in relation to the direction of the magnetizing current?
At right angles
White light intensity at the surface of the part when using fluorescent inspection techniques should be:
A maximum of 2 foot candles
The LEL for Acetlayne is:
2.5 %
Which type of screen presentation displays a plan-type view of the location and size of the test specimen features?
C-scan
Which code governs the welding of Boilers and Pressure Vessels?
ASME Sec. VIII
Consumable insert
All correct
How can one tell if a single-phase ac machine is connected to the same phase of supply circuit with the same instantaneous polarity?
A voltmeter
What magnifying power is typically available for field, pocket, pen, or measuring microscopes that are small and handheld?
10X-50X
Potential hazards of brazing furnaces are:
Asphyxiation and explosive mixtures
Which of the following electrodes should be used to weld stainless steel to carbon steel?
309, 304, 308, 316
309
Whose responsibility is it to verify and keep inspection records?
The company
The major difference between ESW and EGW is:
ESW relies on slag conduction; EGW uses arc conduction
Killed steels are those steels:
Which are deoxidized with aluminum, ferrosilicon, and manganese
What NDE method is shown here?
Visual liquid penetrant
Study this one good cus it don’t make sense fam
Which is a test in which a specimen is prepared with a fine finish , etched and examined using no or low magnification?
Macroetch Test
All of the following are highly toxic materials with exposure limits of less than or equal to 1.0 mg/m3 except:
Aluminum
Wrought iron is a:
Commercially available pure iron
The test involving the use of a torque wrench and a stand-off sleeve is used to test:
Threaded studs
None of these
The tendency of a material to deform very little before failing suddenly is:
Brittleness
The classification E71T-8
Has all position capabilities, DCEN, single or multi pass welding, flux cored electrode
Which of the following documents has legal status by definition?
Codes
Which penetrant method is easiest to use in the field?
Visible dye, solvent removable
Excessive penetration
Post-emulsifiable penetrants:
Require a separate emulsifier to break down and make it water washable
Which of the following test methods may not be used for procedure qualification testing?
Nick-break, Tensile, Radiography, Liquid Penetrant
Liquid Penetrant
The welding inspector shall:
Conduct Audits, perform inspection to procedures and processes, supervise and train AWI’s and more
According to AWS QC1: 2016 an applicant for the CWI exam must have 5 years of experience in an occupational function that has a direct relationship to welded assemblies.
False
Which of the following cutting processes use electricity?
PAC and CAC-A
The active element of most acoustic transducers used today is:
Piezoelectric ceramic
When using GTAW, an increased arc length will cause what?
Higher voltage
The ability to locate discontinuities that are closer together within the material is called:
Resolution
Im GMAW, the distance from the end of the contact tip to the arc is called:
Electrode Extension
