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Basic Welding Mid-term Exam

50 Questions
Welding Quizzes & Trivia

This mid-term exam will ask questions covering the materials that have been discussed and practiced during the 2009 fall semester.

Questions and Answers
  • 1. 
    Potential hazards related to arc welding are
    • A. 

      Radiation

    • B. 

      Fumes

    • C. 

      Toxic gases

    • D. 

      All of the above

  • 2. 
    When using a fire extinguisher to extinguish a fire, it should be
    • A. 

      Pointed at the base of the fire

    • B. 

      Moved up and down to cool the flames

    • C. 

      Pointed at the top of the flames

    • D. 

      Held within 6 inches of the flame

  • 3. 
    What type of fire extinguisher should be used on an electrical fires?
    • A. 

      Class A

    • B. 

      Class B

    • C. 

      Class C

    • D. 

      Class D

  • 4. 
    What are the initials of the federal organization created to insure safe and sanitary working conditions for employees?
    • A. 

      FAA

    • B. 

      IRS

    • C. 

      FDA

    • D. 

      OSHA

  • 5. 
    The maximum safe working pressure for Acetylene is
    • A. 

      10 psi

    • B. 

      15 psi

    • C. 

      20 psi

    • D. 

      32 psi

  • 6. 
    Vaporized metals such as zinc, cadmium, lead, chromium and beryllium
    • A. 

      Are hazardous

    • B. 

      Can be ignored

    • C. 

      Are highly flammable

    • D. 

      May cause slag inclusions

  • 7. 
    Fuel gas hoses are usually colored
    • A. 

      Green

    • B. 

      Red

    • C. 

      Blue

    • D. 

      Yellow

  • 8. 
    Flash burn is
    • A. 

      Another name for a severe sunburn

    • B. 

      A burn caused by the welding arc coming in contact with bare skin

    • C. 

      A burn to the eye caused by exposure to ultraviolet light from the welding arc

    • D. 

      Damage to equipment and clothing due to the extreme heat of the welding arc

  • 9. 
    One should never enter a welding shop without wearing
    • A. 

      Gloves

    • B. 

      Safety glasses

    • C. 

      A welding helmet

    • D. 

      Welding leathers

  • 10. 
    What should one never use on gas cylinders, regulators, connections and hoses?
    • A. 

      Wrenches

    • B. 

      Teflon tapes

    • C. 

      Leak detectors

    • D. 

      Oil

  • 11. 
    • A. 

      Cast iron

    • B. 

      Concrete

    • C. 

      A workbench

    • D. 

      A non-flammable surface

  • 12. 
    One should never operatearc welding equipment while
    • A. 

      Standing on wet or damp floors

    • B. 

      In poorly lighted area

    • C. 

      Someone is standing nearby

    • D. 

      In a confined area with proper ventilation

  • 13. 
    A burn that causes the skin to blister is referred to as a
    • A. 

      First degree burn

    • B. 

      Second degree burn

    • C. 

      Third degree burn

    • D. 

      Fourth degree burn

  • 14. 
    The selection of a correct lens shade number depends on the
    • A. 

      Brightness of the sun in the area

    • B. 

      Type of shielding gas being used

    • C. 

      Amount of welding current being used

    • D. 

      Filler metal being used

  • 15. 
    • A. 

      Information Form (IF)

    • B. 

      Hazardous Information Sheet (HIS)

    • C. 

      Occupational Safety and Hazard Form (OSHF)

    • D. 

      Material Safety Data Sheet (MSDS)

  • 16. 
    Which of the following is the only acceptable method for lighting oxyfuel torches?
    • A. 

      Matches

    • B. 

      Cigarette lighter

    • C. 

      Welding arc

    • D. 

      Striker

  • 17. 
    Areas that have less than ____ cubic feet per welder, or that have ceilings less than 16 feet high, require forced ventilation.
    • A. 

      8,000

    • B. 

      4,000

    • C. 

      10,000

    • D. 

      12,000

  • 18. 
    A confined space is one that
    • A. 

      Has a flammable atmosphere

    • B. 

      Has an unrestricted means of entry or exit for employees

    • C. 

      Is designed for continuous employee occupancy

    • D. 

      Is large enough that a person can enter and perform tasks

  • 19. 
    A Hot Work Permit
    • A. 

      Authorizes the performance of work potentially posing a fire hazard

    • B. 

      Promotes the development of of standard fire safety guidelines

    • C. 

      Records unsafe conditions at the job site

    • D. 

      Helps the manager keep records of hazardous spaces

  • 20. 
    While welding, ventilation should be placed as close to the fume source as practical.
    • A. 

      True

    • B. 

      False

  • 21. 
    • A. 

      True

    • B. 

      False

  • 22. 
    Long hair, loose fitting clothes, and ties are personal safety hazards around rotating equipment.
    • A. 

      True

    • B. 

      False

  • 23. 
    A butane or propane cigarette lighter is safe around welding equipment as long as it is kept in one's pocket.
    • A. 

      True

    • B. 

      False

  • 24. 
    • A. 

      True

    • B. 

      False

  • 25. 
    Safety glasses are not required when welding with the helmet down.
    • A. 

      True

    • B. 

      False

  • 26. 
    Skin contact with liquid oxygen can cause frostbite.
    • A. 

      True

    • B. 

      False

  • 27. 
    Gas cylinder must be chained or secured at all times.
    • A. 

      True

    • B. 

      False

  • 28. 
    Oxygen cylinders should never be stored with flammable gases such as acetylene cylinders.
    • A. 

      True

    • B. 

      False

  • 29. 
    In order to maintain production, it is acceptable to operate welding equipment beyond its rated capacity.
    • A. 

      True

    • B. 

      False

  • 30. 
    When not in use, an electrode holder GTAW torch or MIG gun should not be placed in contact with a grounded metal surface.
    • A. 

      True

    • B. 

      False

  • 31. 
    Acetylene cylinders should never be operated while lying on their side because acetone could be drawn into the valve, regulator and hose.
    • A. 

      True

    • B. 

      False

  • 32. 
    One should never touch an electrode to a metal surface other than the workpiece because those surfaces may become electrically live.
    • A. 

      True

    • B. 

      False

  • 33. 
    • A. 

      True

    • B. 

      False

  • 34. 
    Burns are some of the most common and painful injuries in a welding shop.
    • A. 

      True

    • B. 

      False

  • 35. 
    Fuel gas fittings are equipped with left-hand threads.
    • A. 

      True

    • B. 

      False

  • 36. 
    What is the term for the width of the cut produced by any cutting process?
    • A. 

      Drag line

    • B. 

      Kerf

    • C. 

      Wraparound

    • D. 

      Slag

  • 37. 
    Which fuel gas can be used to cut low-carbon steel?
    • A. 

      MAPP

    • B. 

      Propane

    • C. 

      Acetylene

    • D. 

      All the above

  • 38. 
    The maaximum safe working pressure for acetylene is?
    • A. 

      5 psi

    • B. 

      10 psi

    • C. 

      15 psi

    • D. 

      20 psi

  • 39. 
    • A. 

      Oxidizing

    • B. 

      Neutral

    • C. 

      Carborizing

    • D. 

      None of the above

  • 40. 
    The oxyfuel cutting process uses oxygen and what other types of gases?
    • A. 

      Inert gases

    • B. 

      Reactive gases

    • C. 

      Mixed gases

    • D. 

      Flammable gases

  • 41. 
    What type of thread and color are fuel gas fittings?
    • A. 

      Right hand - red

    • B. 

      Left hand - red

    • C. 

      Right hand - green

    • D. 

      Left hand - green

  • 42. 
    • A. 

      Greater than the acetylene working pressure

    • B. 

      Equal to the acetylene working pressure

    • C. 

      Less than the acetylene working pressure

    • D. 

      A constant 20 psi

  • 43. 
    While flame cutting, the preheat flames (with the cutting jets open) should be?
    • A. 

      Carborizing

    • B. 

      Oxidizing

    • C. 

      Neutral

    • D. 

      Reducing

  • 44. 
    Oxyacetylene torches can cut?
    • A. 

      Stainless steel

    • B. 

      Aluminum

    • C. 

      Copper-nickell alloys

    • D. 

      Carbon steels

  • 45. 
    If an excessive amount of preheat is used when making an oxyfuel cut, the?
    • A. 

      Cutting stream may gouge the side of the cut

    • B. 

      Top edge may be melted or removed

    • C. 

      Cut may be incomplete

    • D. 

      Sides of the kerf may be dished

  • 46. 
    • A. 

      True

    • B. 

      False

  • 47. 
    Acetylene can be used with an oxyfuel cutting tip?
    • A. 

      True

    • B. 

      False

  • 48. 
    • A. 

      True

    • B. 

      False

  • 49. 
    The device used to control the pressure on an oxyfuel cutting torch set is called?
    • A. 

      Valves

    • B. 

      Handles

    • C. 

      Wing-pressure adjusting screws

    • D. 

      Regulators

  • 50. 
    What type of clothing should always be worn when using an OFC torch?
    • A. 

      Leather

    • B. 

      100% cotton

    • C. 

      Wool

    • D. 

      Rayon