13. which of the following is a common gmaw application?\na) baking bread\nb) sewing clothes\nc) automotive…

13. which of the following is a common gmaw application?\na) baking bread\nb) sewing clothes\nc) automotive welding\nd) plumbing repairs\n14. what minimum safety equipment should a welder always wear when performing gmaw?\na) safety knee pads\nb) earplugs\nc) welding helmet with appropriate filter, safety glasses, leather gloves and a welding jacket.\nd) gardening gloves\n15. gmaw is suitable for which of the following welding positions?\na) flat, horizontal, vertical, and overhead\nb) only vertical and overhead\nc) only flat position\nd) only horizontal position\n16. what is the purpose of the wire feed speed control in gmaw?\na) adjust the arc voltage\nb) regulate the gas flow rate\nc) control the wire diameter\nd) manage the welding current\n17. when welding with gmaw, what does \spatter refer to?\na) the metal filler wire\nb) excessive sparks\nc) unwanted drops of molten metal\nd) the shielding gas\n18. what is the typical diameter of the welding wire used in gmaw?\na) 1/16 inch\nb) 1/8 inch\nc) 0.030 to 0.045 inch\nd) 1/4 inch

13. which of the following is a common gmaw application?\na) baking bread\nb) sewing clothes\nc) automotive welding\nd) plumbing repairs\n14. what minimum safety equipment should a welder always wear when performing gmaw?\na) safety knee pads\nb) earplugs\nc) welding helmet with appropriate filter, safety glasses, leather gloves and a welding jacket.\nd) gardening gloves\n15. gmaw is suitable for which of the following welding positions?\na) flat, horizontal, vertical, and overhead\nb) only vertical and overhead\nc) only flat position\nd) only horizontal position\n16. what is the purpose of the wire feed speed control in gmaw?\na) adjust the arc voltage\nb) regulate the gas flow rate\nc) control the wire diameter\nd) manage the welding current\n17. when welding with gmaw, what does \spatter refer to?\na) the metal filler wire\nb) excessive sparks\nc) unwanted drops of molten metal\nd) the shielding gas\n18. what is the typical diameter of the welding wire used in gmaw?\na) 1/16 inch\nb) 1/8 inch\nc) 0.030 to 0.045 inch\nd) 1/4 inch

Answer

Brief Explanations:

  • Question 13: GMAW (Gas Metal Arc Welding) is commonly used in automotive welding. Baking bread is a culinary activity, sewing clothes is a textile - related task, and plumbing repairs usually involve soldering or other pipe - joining methods rather than GMAW.
  • Question 14: A welder performing GMAW must protect against sparks, heat, and light. A welding helmet with an appropriate filter protects the eyes and face, safety glasses (under the helmet in some cases), leather gloves protect the hands, and a welding jacket protects the body. Safety knee pads are for knee protection (not minimum for welding), earplugs are for noise (not the main hazard in GMAW compared to heat/light/sparks), and gardening gloves are not heat - resistant.
  • Question 15: GMAW can be used in flat, horizontal, vertical, and overhead positions. It is a versatile welding process.
  • Question 16: In GMAW, the wire feed speed is related to the welding current. Faster wire feed generally means more current (as more wire is melted, requiring more heat). Arc voltage is adjusted separately (related to the power source settings), gas flow rate is regulated by a gas regulator, and wire diameter is a pre - set parameter (not controlled by wire feed speed).
  • Question 17: In welding, spatter refers to unwanted drops of molten metal. The metal filler wire is the consumable electrode, excessive sparks are a different phenomenon (more like visible electrical discharges), and the shielding gas is used to protect the weld pool.
  • Question 18: The typical diameter of the welding wire used in GMAW is in the range of 0.030 to 0.045 inch. 1/16 inch (0.0625 inch) is thicker than typical, 1/8 inch (0.125 inch) and 1/4 inch (0.25 inch) are much thicker and not standard for GMAW wire.

Answer:

  1. C. Automotive welding
  2. C. Welding helmet with appropriate filter, Safety glasses, leather gloves and a welding jacket
  3. A. Flat, horizontal, vertical, and overhead
  4. D. Manage the welding current
  5. C. Unwanted drops of molten metal
  6. C. 0.030 to 0.045 inch