VT Theory Questions (Level II)
63. All casting discontinuities are considered to be: a. inherent. b. primary processing. c. secondary processing. d. service-induced.
a
A basic metallurgical joint configuration that is used for complete joint penetration is called: a butt joint. b. a fillet joint. c. a lap joint. d. none of the above.
a
A common processing discontinuity for a bolt is: a. burst b. porosity c. necking down d. all of the above
a
A device that transmits the load from a piping system to the building structure is called: a. pipe clamp. b. a riser clamp. c. a component support. d. an integral attachment.
a
A narrow angle of view in a bore scope is required for: a. high magnification. b. low magnification. c. greater depth of field. d. greater reflectivity.
a
A protrusion or rollover of weld metal beyond the toe or root is called: a. overlap. b. undercut. c. reinforcement. d. overfill
a
A reduction in ductility due to in-service or pre service environments is called: a. embrittlement. b. hydrogen fatigue cracking. c. thermal fatigue. d. intergranular stress corrosion cracking.
a
A slag-type discontinuity is produced by: a. SMAW b. GTAW c. GMAW d. brazing
a
A typical inadequate construction practice involving component supports involves: a. the use of different or wrongly sized parts. b. elongated bolt holes. c. corrosion. d. stress corrosion cracking.
a
A welding process in which shielding is provided by the electrode covering is called: a. SMAW b. GTAW c. GMAW d. brazing
a
An overload condition of a component support is indicated by: a. twisted, elongated, or bent parts. b. improperly torqued bolts. c. missing parts d. discolored or burned parts
a
Embrittlement, caused by a physical or chemical change in the metal, is a reduction in: a. ductility b. hardness c. hydrogen d. all of the above
a
For a given size weld, the theoretical throat for a concave fillet weld is: a. the same for a convex fillet weld. b. larger for a convex fillet weld. c. smaller for a convex fillet weld. d. equal to the effective throat.
a
In order to obtain light of a specific wavelength, use: a. filters b. shades. c. reflectors. d. diffractive screens
a
In the casting process, a chaplet is: a. a device that supports the core material. b. a device that is used as a heat sink. c. a ragged. irregularly shaped discontinuity. d. all of the above.
a
Operationally, valves are categorized as linear and: a. rotational. b. stop/start. c. regulatory. d. unidirectional.
a
Overlap is a weld profile condition where the angle formed at the junction between the weld and base material is: a. less the 90 degrees from the plate surface. b. equal to 90 degrees from the plate surface. c. greater than 90 degrees from the plate surface. d. an internal flaw only detectable with ultrasonic testing.
a
Pitting is one type of: a. occluded cell corrosion. b. stress corrosion. c. general corrosion. d. galvanic corrosion.
a
The deterioration of a metal by chemical or electrochemical reaction with its environment is called: a. corrosion. b. erosion. c. IGSCC. d. none of the above.
a
The difference between discontinuities and defects is that: a. a defect is a rejectable discontinuity. b. discontinuities affect the base metal, whereas defects affect the weld metal c. there should be no distinction between discontinuities and defects. d. a discontinuity is a rejectable defect.
a
The fundamental reason that a bimetallic thermometer operates is: a. that metals change volume as temperature changes. b. that metals have the same coefficients of expansion. c. that thin strips of metal with different coefficients of expansion are placed next to each other. d. all of the above.
a
The gage that is typically used to measure the face reinforcement of a butt joint is a: a. Cambridge gage. b. Tempil™ gage. c. fillet weld gage. d. all of the above.
a
The three stages to fatigue are: a. initiation, propagation, and failure b. initiation, branching, and expansion c. stress, temperature, and propagation. d. none of the above.
a
To be acceptable, a concave fillet weld must have an actual leg dimension that is: a. longer than the size. b. shorter than the size. c. equal to the size. d. equal to the throat.
a
When the weld is to be placed on the arrow side of the joint, the weld symbol in the drawing will be: a. below the line. b. above the line. c. in the tail. d. at the end of the arrow
a
Which of the following is a basic joint configuration: a. tee joint. b. single V joint. c. single J joint. d. All of the above.
a
Which of the following is a primary processing method: a. forging. b. machining. c. Heat treating. d. all of the above
a
A condition of excessive offset of the inside diameter surface is called: a. underfill b. misalignment c. overlap d. excessive reinforcement
b
A convex weld surface: a. curves inward b. curves outward c. contains a hollow d. does both a and c
b
A crater crack is formed: a. at the junction between weld beads. b. at the start and stop of a weld bead. c. in the base material during the rolling process d. in the base material during the forging process
b
A discontinuity that appears as a series of re-melted dots beside a weld, resembling a trail left in striking a match is called: a. linear porosity. b. arc strikes. c. undercut d. slag.
b
A mechanical device that controls flow is called: a. pump b. valve c. snubber d. all of the above
b
A remote visual examination aid that is used for viewing around comers with a flexible distal end is called: a. optiscope. b. fiberoptic borescope. c. mirror. d. image guide.
b
A rounded discontinuity that occurs in the weld and is then distributed in line, parallel with the weld is called: a. melt-through. b. linear porosity. c. cluster porosity. d. a crack.
b
An optical aid used in visual examination that brings the image to the eyepiece by a lens train is called: a. fiberoptic bore scope. b. bore scope. c. mirror. d. image guide.
b
Discontinuities that are produced during the hot or cold working of the ingot into rod or bar to make studs are called: a. inherent discontinuities b. primary processing discontinuities c. secondary processing discontinuities d. service-induced discontinuities
b
Discontinuities that originate during the melting and original solidification of the metal in the ingot are categorized as: a. forming discontinuities. b. inherent discontinuities. c. process discontinuities. d. service-induced discontinuities
b
Localized reduction in an area of a bolt that is under overload conditions is referred to as: a. sizing b. necking down c. erosion d. elongation
b
On a welding symbol, the horizontal line connecting the arrow and the tail is called the: a. main line b. reference line c. symbol line d. AWS line
b
Repeated fluctuating stress having a maximum value less than the tensile strength of the material is called: a. a crack. b. mechanical fatigue. c. thermal fatigue. d. stress corrosion cracking.
b
The angle(s) for the fore-oblique direction of view bore scope is/are: a. 0 degrees. b. 1-89 degrees c. 90 degrees. d. 91-110 degrees.
b
The leg of a concave fillet weld is: a. the same as the size of a concave fillet weld. b. larger than the size of a concave fillet weld c. equal to the actual throat dimension d. not applicable to a fillet weld
b
The portion of base metal that has not been melted but where mechanical properties or microstructure have been altered by the heat of welding is defined as: a. the fusion zone. b. the heat-affected zone. c. both a and b above. d. none of the above.
b
The structure or shape of mechanical fatigue type cracking is best described as: a. multiple indications or brazing. b. relatively straight and non-branched. c. multiple intergranular indications. d. all of the above.
b
The theoretical throat dimension for a 10 mm (0.4 in.) leg fillet weld is: a. 5 mm (0.2 in.). b. 7 mm (0.3 in.). c. 10 mm (0.4 in.). d. 13 mm (0.5 in.).
b
The three physical characteristics of color include: a. saturation, brightness, and glare b. hue, saturation, and brightness c. reflective index, spectral range, and hue d. tone, shade, and hue
b
The type of corrosion that occurs when dissimilar metals are in contact or are electrically connected in a corrosive medium is called: a. selective leaching b. galvanic corrosion c. crevice corrosion d. stress corrosion
b
The welding process that is sometimes referred to as "stick welding" is: a. SAW b. SMAW c. GMAW d. GTAW
b
Tungsten inclusions arc found during: a. GMAW. b. GTAW. c. SMAW. d. none of the above.
b
Weldments might contain: a. shrinkage b. incomplete penetration c seams d laps
b
A depression on the face of a fillet weld that reduces the cross section of the weld when measured at the depression is called: a. depressed bead. b. excessive convexity. c. insufficient throat . d. insufficient leg.
c
A disadvantage of the GMAW process is: a. that slag removal is required b. that there is an excessive amount of post-weld cleaning c. that shielding gas must be protected from drafts d. all of the above
c
A discontinuity typically found in forgings is: a. shrinkage b. bleed-out c laps d undercut
c
A non-fusion discontinuity that is located at the root area of a welded joint is called a: a. porosity. b. hot tear. c. incomplete joint penetration. d. all of the above.
c
A process that uses a filler metal with a liquidus state that does not exceed 449 °C (840 °F) and that does not melt the base material is: a. SMAW. b. brazing. c. soldering. d. resistance welding
c
A restraint: a. allows only expansive movement. b. allows for only thermal movement. c. allows limited or no motion in one or more directions. d. does all of the above.
c
A visual examination of the rubber elastomer seating material is performed on: a. a gate valve. b. a check valve. c. a diaphragm valve. d. all of the above.
c
Chevrons may occur in: a. plates. b. weldments. c. bar stock. d. valve castings
c
Direct visual examination is possible when the eye can be placed within: a. 305 mm (12 in.) of the inspection surface. b. 381 mm ( 15 in.) of the inspection surface. c. 610 mm (24 in.) of the inspection surface. d. 762 mm (30 in.) of the inspection surface.
c
Electronic aids to vision are based primarily on: a. photosynthetic devices. b. photothermal devices. c. photoelectric devices. d. photostat devices.
c
Failure to adequately penetrate the weld root of a groove weld is called: a. lack of fusion b. excessive penetration c. incomplete joint penetration d. undercut
c
Horizontal indications on the edge of a 76 mm (3 in.) plate are on several levels and do not extend along the whole edge. The most likely cause of these visual indications is: a. pipe. b. poor burning practice. c. laminations. d. porosity.
c
On a welding symbol, the flag symbol indicates: a. shop weld b. repair weld c. field weld d. weld all around
c
One of the principal characteristics of a hanger is that the: a. support member is in compression. b. component is supported from below. c. support member is in tension. d. component weight is lateral to the hanger
c
The brazing process is commonly defined as a liquid-solid phase joining method accomplished at a temperature above: a. 232 °C (450 °F). b. 343 °C (650 °F), c. 449 °C (840 °F). d. 504 °C (940 °F).
c
The component support that allows normal thermal movement but restrains movement during a seismic event is called a: a. hanger b. support c. snubber d. restraint
c
The formation and collapse of gas bubbles in fluids is called: a. water hammer. b. corrosion. c. cavitation. d. erosion
c
The gage that provides measurements of internal misalignment on 76 mm (3 in.) diameter pipe is: a. a Cambridge gage. b. a fillet weld gage. c. a hi-lo welding gage d. both a and b
c
The human eye cannot always distinguish clearly the fine differences between contact angles and states of wetting when inspecting soldered joints. To improve the inspector's ability to distinguish these differences, it is recommended that the inspector use magnification in the range of: a. 200x-300x. b. 300x-400x. c. No more than 10x d. 100x-200x
c
The least common location for fastener failure is: a. in the head to shank fillet b. throughout the first thread inside the nut on threaded fasteners c. in the mid grip d. at the transition from the thread to the shank
c
The melting and fusing of the filler metal and base metal into a straight continuous weld pass is called a: a. multi-pass weld. b. depressed bead. c. stringer bead. d. weave pattern.
c
The welding process in which there is a higher degree of probability of entrapping slag is: a. GMAW b. GTAW c. SMAW d. all of the above
c
To measure the diameter of a 76 mm (3 in) stud most accurately, use a: a. 51-76 mm (2-3 in.) inside mechanical gage (micrometer). b. outside caliper. c. 152 mm (6 in.) dial caliper. d. mechanical (micrometer) depth gage.
c
Visual inspection is easy to apply, quick and relatively inexpensive, and requires no special equipment other than: a. a clean work area. b. 25x magnification. c. good eyesight. d. 2152 Ix (200 ftc) of illumination.
c
A cause for undercut that occurs during the welding process is called: a. excessive voltage or current. b. slow travel speed. c. excessive travel speed. d. both a and c above
d
A destructive force that occurs in components is: a. water hammer. b. vibration. c. corrosion. d. all of the above. e. both b and c above.
d
A discontinuity that is found in bars and forgings, which is caused by the rupture of metal forged at either too low or too high temperatures, is called: a. pipe. b. seam. c. cupping. d. internal burst.
d
A hanger assembly that is attached to a pipe with a pipe clamp is considered to be: a. a class 1 component support. b. an integral attachment. c. a restraint assembly. d. a non-integral attachment.
d
A visual examination of a swing check valve would include: a. examination of the hinge pin. b. examination for wear on the disc c. examination for wear on the seat d. all of the above
d
A wide angle of view for a bore scope provides: a. illumination. b. high magnification . c. shorter depth of field. d. greater depth of field.
d
An employer shall establish a qualification and certification program based on: a. education and experience b. training and testing c. evaluation d. all of the above e. at both a and b above
d
An inherent discontinuity associated with the original solidification of metal in the ingot is called: a. a seam. b. thermal fatigue. c. a hot tear. d. porosity
d
Cracks can occur in: a. forgings b. castings c. welds d. all of the above
d
Discontinuities associated with the casting process are: a. inclusions b. hot tears c. porosity. d. all of the above.
d
During the solidification of metal, a hole produced due to escaping gases is called a: a. burst b. cold shut c. flaking d. blow hole
d
Excessive clearance in gate valve guide ribs may lead to: a. erosion. b. misalignment. c. wear. d. all of the above.
d
In a bore scope, the image is brought to the eyepiece by: a. an objective lens. b. relay lenses. c. an eyepiece lens. d. all of the above.
d
In welding, temperature indicating sticks are used to monitor: a. preheat temperatures. b. post heat temperatures. c. interpass temperatures. d. all of the above.
d
Joint profiles of finished welds are controlled by: a. acceptance standards. b. workmanship standards. c. design requirements. d. all of the above.
d
Metals that become weaker due to continuing deformation under steady stress at elevated temperatures demonstrate: a. thermal fatigue. b. stress corrosion cracking. c. corrosion reduction . d. creep.
d
Recording information from a visual examination is accomplished using: a. a videotape recording of the examination area. b. photographs. c. a subjective report. d. all of the above.
d
Service-induced discontinuities in bolting systems may be produced by: a. vibration b. over-tensioning c. corrosion d. all of the above
d
The fillet weld size is based on the: a. effective fillet weld throat. b. length of fillet weld. c. theoretical throat. d. length of fillet weld leg.
d
The mechanism for soldering and brazing is: a. wetting b. alloying. c. capillary action. d. all of the above.
d
The roughest surface finish is indicated by a measurement of: a. 64 µin. b. 150 µin. c. 250 µin. d. 380 µin.
d
Weld metal that completely fills the groove and is fused to the base metal throughout its total thickness is called: a. partial joint penetration. b. plate thickness. c. theoretical throat. d. complete joint penetration.
d
When visually examining an arc strike, the inspector should inspect for: a. lack of fusion. b. craters. c. whiskers. d. cracks.
d
A service-induced failure for a component support could be caused by: a. cracking or chipped concrete. b. loose nuts or improper thread engagement. c. bent or deformed bolts. d. damage resulting from overloading. e. all of the above.
e
Primarily, piping leaks occur at components such as: a. integral attachments. b. bolted connections. c. valves. d. all of the above. e. both b and c above.
e
The most common location for fastener failure is: a. at the head to shank fillet. b. at the shank to thread transition. c. an axial crack that runs the length of the bolt. d. all of the above. e. at both a and b above.
e
