CHAPTER 16 SAMPLE QUIZ QUESTIONS
NOTE TO INSTRUCTOR: In constructing variations to the questions in this
chapter, care should be taken in the selection of multiple choice responses. The
responses used in the questions herein were carefully selected to avoid
controversy. For instance in question 1 SMAW or FCAW were not used as
responses because these processes are also widely used in plate girder
manufacturing although the SAW process is the best selection for typifying this
type of application. The text mentions only SAW for plate girder manufacturing
and the other three choices offered in the quiz question 1 (RSW, RSEW, and
TW) are clearly incorrect responses to this question. This caution is offered to
avoid challenges by students who may be experienced welders and may
question the correct answer to a multiple choice question if the responses are
not carefully selected to avoid such controversy. The same caution is urged for
other sample questions offered for this chapter.
16.1. Which of the following welding methods would most likely be found as part of a
production process in the fabrication of large structural steel beams or plate
girders?
a. RSW
b. RSEW
d. TW
ref. p. 420
16.2. Which of the following welding methods would be more likely to be found as part
of a mass production process in a typical manufacturing plant?
a. RSW
b. SMAW
c. FCAW
d. SAW
ref. p. 420-421
16.3. Which of the following types of welding is noted for pinpointing the weld with
microscopic accuracy?
a. RSEW
b. SAW
c. TW
ref. p. 422
16.4. Which of the following types of welding is associated with stick electrode
welding?
a. RSEW
c. SAW
d. RSW
ref. p. 419
16.5. Which of the following types of welding is associated with inert gas shielding?
a. FCAW
b. SAW
d. TW
ref. p. 419-420
16.6. Which of the following types of welding is associated with inert gas shielding?
a. FCAW
b. SAW
d. TW
ref. p. 419-420
16.7. Which of the following types of welding is associated with inert gas shielding?
a. FCAW
b. SAW
d. TW
ref. p. 419-420
16.8. Which of the following types of welding is associated with inert gas shielding?
a. LBW
b. MAPP
d. RSEW
ref. p. 419-420
16.9. Which of the following types of welding uses flexible consumable electrodes on
spools?
a. FCAW
c. SAW
d. LBW
ref. p. 419
16.10. Which of the following types of welding uses flexible consumable electrodes on
spools?
a. TW
b. LBW
c. SAW
ref. p. 419
16.11. Which of the following types of welding uses flexible consumable electrodes on
spools?
a. SMAW
b. TW
c. SAW
ref. p. 419
16.12. Which of the following types of welding uses flexible consumable electrodes on
spools?
a. RSEW
c. SMAW
d. RSW
ref. p. 419
16.13. Which of the following types of welding uses flexible consumable electrodes on
spools?
a. FCAW
c. SAW
d. LBW
ref. p. 419
16.14. Which of the following types of welding employs an inert gas?
a. FCAW
b. oxy-acetylene welding
c. SAW
d. TIG
ref. p. 419-420
16.15. Which of the following types of welding employs an inert gas?
a. GTAW
b. GMAW
c. TIG
e. none of the above
ref. p. 419-420
16.16. Which of the following types of welding employs an inert gas?
a. RSW
b. RSEW
c. SMAW
d. all of the above
ref. p. 419-421
16.17. Which of the following types of welding employs an inert gas?
a. SAW
b. SMAW
c. FCAW
d. all of the above
ref. p. 419-421
16.18. Which of the following types of welding employs an inert gas?
a. LBW
b. TW
c. FCAW
d. all of the above
ref. p. 419-422
16.19. Which of the following distinguishes brazing from soldering?
a. Type of fuel gas used
b. State of the inerting agent
d. Flux
ref. p. 418
16.20. If there is fusion of the parent metal in a joining process the process is
designated as
a. welding
b. brazing
c. soldering
d. sintering
ref. p. 418
16.21. Which of the following processes generally requires the hottest temperatures?
a. welding
b. brazing
c. soldering
d. sintering
ref. p. 418
16.22. Which of the following processes is safest from the standpoint of exposure of the
operator to health hazards?
a. FCAW
b. oxy-acetylene welding
d. TIG
ref. p. 420
16.23. Which of the following is a principal disadvantage of submerged arc welding?
a. the fluxes used are compounds of fluorine
b. nitrogen as an inerting agent can result in oxygen deficiency
c. flashback
ref. p. 420
16.24. A principal purpose of the flux in welding operations is to
a. dispose of the slag
c. enhance the flow of the weld
d. purify the welder’s breathing air
ref. p. 419
16.25. A principal purpose of the flux in welding operations is to
a. dispose of the slag
c. enhance the flow of the weld
d. purify the welder’s breathing air
ref. p. 419
16.26. A principal advantage of resistance welding operations is that they
a. are relatively safe
b. produce stronger welds
c. are good for pinpoint accuracy
d. are flux-cored
ref. p. 420
16.27. A principal disadvantage of resistance welding operations is that they
a. are limited to sheet metal applications
b. require higher temperatures than conventional welding
c. require an inerting agent
d. require personal protective equipment
ref. p. 420
16.28. A principal advantage of spot welding operations is that they
a. are relatively safe
b. produce stronger welds
c. are good for pinpoint accuracy
d. are flux-cored
ref. p. 420-421
16.29. A principal disadvantage of spot welding operations is that they
a. are limited to sheet metal applications
b. require higher temperatures than conventional welding
c. require an inerting agent
d. require personal protective equipment
ref. p. 420
16.30. A principal advantage of seam welding operations is that they
a. are relatively safe
b. produce stronger welds
c. are good for pinpoint accuracy
d. are flux-cored
ref. p. 420-421
16.31. A principal disadvantage of seam welding operations is that they
a. are limited to sheet metal applications
b. require higher temperatures than conventional welding
c. require an inerting agent
d. require personal protective equipment
ref. p. 420
16.32. Which of the following is an inerting agent for welding processes?
a. cadmium
b. MAPP gas
d. slag
ref. p. 419
16.33. Which of the following is an inerting agent for welding processes?
a. helium
b. acetylene
c. oxygen
d. MAPP gas
ref. p. 419
16.34. Resistance welding requires electric current and
a. a suitable flux
b. high voltage
d. all of the above
e. none of the above
ref. p. 420
16.35. Spot welding requires electric current and
a. a suitable flux
b. high voltage
d. all of the above
e. none of the above
ref. p. 420-421
16.36. Seam welding requires electric current and
a. a suitable flux
b. high voltage
d. all of the above
e. none of the above
ref. p. 420-421
16.37. Which of the following welding operations requires pressure in addition to heat?
a. thermit
c. TIG
d. MIG
ref. p. 420-421
16.38. Which of the following welding operations requires pressure in addition to heat?
a. laser beam
b. GMAW
c. FCAW
ref. p. 420-421
16.39. The maximum permissible pressure for acetylene in manifolds is
a. 15 psia
c. 30 psig
d. 2000 psi
ref. p. 422
16.40. The maximum permissible pressure for acetylene in solution with acetone in
cylinders is
a. 15 psia
b. 30 psia
c. 30 psig
ref. p. 422
16.41. For which of the following is grease on the hands or gloves most hazardous?
a. handling acetylene gas cylinders
b. handling MAPP gas cylinders
d. handling propane cylinders
ref. p. 426
16.42. Acetylene is generated from which combination of ingredients?
a. calcium carbide and acetone
b. acetone and MAPP gas
c. helium and acetone
ref. p. 423
16.43. Acetylene is generated from which combination of ingredients?
a. calcium carbide and acetone
b. calcium carbide and MAPP gas
c. calcium carbide and helium
ref. p. 423
16.44. Which of the following processes is an arc welding process?
a. oxyacetylene welding
c. spot welding
d. seam welding
ref. p. 419-420
16.45. Oxygen cylinders are more hazardous than acetylene cylinders principally
because
a. oxygen is unstable
b. oxygen is flammable
c. acetylene is inert
ref. p 425
16.46. Which of the following processes can be classified as “gas welding”?
b. gas tungsten arc welding
c. gas metal arc welding
d. submerged arc welding
ref. p. 419-420
16.47. A typical acetylene cylinder contains liquid because
a. the acetylene is under a pressure of 2000 psi
b. water is needed to displace the used acetylene
d. none of the above; acetylene cylinders do not contain liquid
ref. p. 422
16.48. Which of the following substances is emphasized as a hazard in the OSHA
welding standard?
a. silica
b. manganese
c. magnesium
ref. p. 436
16.49. Which of the following lung irritants is emphasized in the OSHA welding
standard?
a. ozone
b. phosgene
c. phosphine
ref. p. 436
16.50. Which of the following common asphyxiants in the welding process is a chemical
asphyxiant?
a. argon
b. carbon dioxide
d. helium
ref. p. 436
16.51. Which of the following agents is a cause of nonfibrotic pneumoniosis?
a. asbestos
c. copper
d. silica
ref. p. 436
16.52. Select the most dangerous of the following potential exposures in the welding
environment.
b. carbon
c. aluminium
d. tin
ref. p. 436
16.53. Which of the following agents in the welding environment is considered the least
dangerous?
a. lead
b. mercury
d. zinc
ref. p. 436
16.54. Carbon dioxide in the welding environment is considered to be in which of the
following categories?
a. lung irritant
c. poison
d. pneumoconiosis
ref. p. 436
16.55. Airborne asbestos is the best described as a
a. lung irritant
b. poison
c. chemical asphyxiant
ref. p. 436
16.56. Name at least three air contaminants in the welding environment that are
specifically addressed in the welding standards.
16.57. Explain why stainless steel is one of the most dangerous materials to weld.
16.58 The process of protecting metal with a coating of primarily zinc is called
galvanizing.
16.59. The process of metal coating of primarily cadmium is called galvanizing.
16.60. Stainless steel is one of the most dangerous materials to weld because of its
high cadmium content.
16.61. Stainless steel is one of the most dangerous materials to weld because of its
high chromium content.
16.62. For which plating metal have chronic exposures been associated with
emphysema and kidney impairment?
16.63. The energy of the welding arc can cause decomposition of chlorinated
hydrocarbon solvents to produce what dangerous gas?
16.64. Phosgene is generated from the decomposition of
a. chlorinated hydrocarbons
b. trichloroethylene
c. solvents
e. none of the above
ref. p. 437
16.65. Which of the following is not an agent for decomposition into dangerous
phosgene gas?
a. chlorinated hydrocarbons
b. trichloroethlene
c. solvent
ref. p. 437
16.66. Nitrogen is so stable that it is not subject to oxidation.
16.67. In the intense heat of welding, even nitrogen can be oxidized.
16.68. In the intense heat of welding, even argon can be oxidized.
16.69. In the intense heat of welding, even helium can be oxidized.
16.70. According to Sax, exposure to NOx in which of the following ranges results in the
air hunger, cyanosis, loss of consciousness, and final death?
a. 25 to 50 ppm
c. 200 to 500 ppm
d. 1 to 2 per cent
ref. p. 438
16.71. What is the primary route of entry of lead and mercury fumes into the body?
16.72. Which of the welding fumes cited in the text as being responsible for a fatality in
a single acute exposure?
16.73. Which of the following is an alloy that makes the metal very dangerous to weld?
a. copper
b. steel
c. aluminum
ref. p.438
16.74. The principal hazard of fluorine compounds is acute, not chronic, exposure.
16.75. The principal hazard of fluorine compounds is chronic, not acute, exposure.
16.76. Which of the following agents is most known for causing abnormalities in the
victms bones?
a. lead
b. mercury
c. beryllium
d. cadmium
ref. p. 438
16.77. One of the reasons for the success of the popular shielded metal arc welding
process (SMAW) is that it is not subject to the hazards of fluorine compounds.
16.78. Which metal fume is cited in the text as being responsible for “metal fume
fever?”
16.79. Which of the following is sometimes called “Monday morning sickness?”
a. metal fumes fever
b. cyanosis
c. lead poisoning
d. beryllium poisoning
ref. p. 437
16.80. “Monday morning sickness” is most associated with exposure to which of the
following fumes.
a. lead
c. mercury
d. beryllium
ref. p. 437
16.81. The phenomenon of “flashback” in context of occupational safety and health
pertains to:
a. flammable liquids
b. industrial truck charging areas
c. Class I, Division 1 atmospheres
ref. p. 427
16.82. One of the worst workplace disasters in world history involved a fire and
explosion from sparks generated by a welder’s torch in
a. a Union Carbide chemical plant in India
c. a nuclear plant in Chernobyl, Russia
d. a cooling tower under construction at Three-Mile Island, Virginia
ref. p. 431
16.83. Explain the difference between the terms “operators” and “operations” as these
terms are used in connection with eye protection for welding. Why is this
distinction significant?
16.84. Why do welders’ helpers and other personnel sometimes need more training in
the use of eye protection than the welders themselves?
16.85. The darker the shade the more eye protection for the welder.
16.87. Explain the tradeoff or drawback that prevents selection of a higher protective
shade for the protection of welders’ eyes.
16.88. Arc welding requires darker shade numbers for welding eye protection than does
gas welding.
16.89. Which of the following types of welding requires the darkest shade numbers for
eye protection?
b. thermit welding
c. oxyacetylene gas welding
d. submerged arc welding
ref. pp. 419-422 and 434
16.90. Which of the following types of welding is usually done with goggles instead of
helmets with shades?
a. flux-cored arc welding
b. shielded metal arc welding
c. gas tungsten arc welding
ref. p. 434
16.91. Why should welding cylinder valves be turned off at the end of the shift in
addition to turning off the torch valves?
16.92. Explain why precautions should be taken when welding equipment connected to
oxygen and acetylene tanks is stored in the confined space of an equipment
locker.
16.93. Why has the traditional “welding permit” system evolved into newer “hot work”
permit systems?
16.94. Only the supervisor, not the welding operator, is authorized to sign a hot work
permit.
16.95. A fire watch is needed under which of the following conditions?
a. Whenever a hot work permit is required.
b. Whenever a welding permit is specified.
of the welding operation covered by a hot work permit.
d. Whenever a licensed professional engineer deems that the fire watch is
16.96. When might a second fire watch be needed?