Test your basic knowledge |

Gas Metal Arc Welding

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. List the factors that determine the mode of metal transfer






2. What is the maximum distance that hard wire can be successfully pushed?






3. What output on the welding machine is used to rate the duty cycle?






4. Give a description of 'pinch effect'






5. What term is used to describe when the workpiece is hooked to the negative pole on the power source?






6. What does the wire feeder control?






7. What controls amperage when using GMAW?






8. What does a flowmeter do and what does it measure?






9. What is the purpose of the pick- up lead on a voltage sensing wire feeder?






10. A 10 minute cycle of welding time vs cooling time a given machine can handle.






11. Why is globular transfer generally avoided with GMAW?






12. How are GMAW guns rated?






13. What is the required arc voltage used for short circuit transfer?






14. What does the term GMAW identify?






15. What 2 controls are found on a GMAW set- up?






16. Draw a typical volt/amp curve that would be found with a power source designed for SMAW or GTAW






17. What is the reason glass 'tube' type flowmeters must have the tube mounted truly vertical?






18. What wire are knurled drive rolls most commonly used on?






19. What effect does increasing and decreasing the inductance have on the weld?






20. What does the abbreviation NEMA stand for?






21. What controls the wire speed on a voltage sensing wire feeder?






22. List several industries that would use GMAW






23. What is the purpose of the shielding gas used in GMAW?






24. List the basic equipment requirements for the GMAW process






25. What would be an indication that the drive roll pressure is adjusted correctly?






26. What is a typical flow rate of CO2 for short circuit transfer?






27. Why is a line heater required when using GMAW?






28. Draw a typical volt amp curve for a machine that is designed for GMAW






29. A machine with a 70% duty cycle can run at its max for 7 minutes with a cooling cycle of only _ minutes.






30. What happens when the electrode extension is increased?






31. Is the arc voltage for spray transfer higher or lower than that used for short circuit transfer?






32. When using flat drive rolls with too much pressure on copper coated solid wires what problem could take place?






33. What current and polarity is generally used with GMAW?






34. What is the disadvantage of the gauge preset type of regulator/flowmeter?






35. Why must CO2 cylinders be used in the vertical position?






36. What is an advantage of pulsed arc transfer with GMAW?






37. What are the 2 types of wire feeders available?






38. A pull type drive system is usually used on what type of material?






39. What is the recommended electrode stick- out for .035 solid wire?






40. When is the metal transferred with short circuit transfer?






41. List the three methods of metal transfer with GMAW






42. What processes are constant current (CC) power sources designed to be used with?






43. What type of power source is used with a constant speed wire feeder?






44. What is the preferred drive roll design for solid wires?






45. What is the main purpose of 'slope'?






46. How many times per second does short circuiting take place?






47. In the GMAW process what does amperage control?






48. List 3 forms compressed gases may be supplied for welding






49. List 3 wire drive systems and give a short description of each






50. Give a brief description of the GMAW process







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:



Major Subjects



Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Most popular tests