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Test your basic knowledge |
Welding
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 42 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. Duty cycle of a welding machine is based on the...
Not turned in all the way
2200 F
The valve from breaking off
None of the above
2. Shielding gas flow rates will vary but a common starting point for short circuit transfer is...
12-15 CFH
250 psi
The valve from breaking off
15 psi
3. How are dirt particles removed from cutting and welding tips
2800 F
Tip cleaners
Oxidizing
Position
4. Acetylene not contained in suitable cylinder is not safe above
Copper
Drag
15 psi
1640 F
5. 60
Ask - water
Oxidizing
Tensile strength
Contact tube
6. What type of polarity is best for welding out of position
DCT
Drag
420 F
Tensile strength
7. To stop Back firing or popping the gas flow through the tip should be...
Increased
250 psi
Manipulation of puddle
1245 F
8. Class C
Electrical - secure power and CO2
2200 F
2800 F
Flush with or slightly extending from the nozzle - matched in size to wire diameter - and fastened tight
9. Undercut on fillet welds can be a result of...
420 F
Ask - water
Opened slowly
Improper work angles - lack of a heat sink - and improper parameters
10. 1
Type of flux/polarity
Tip cleaners
Speed of travel
Electrical - secure power and CO2
11. 1
Metal - get outside
Position
Increased
2200 F
12. Class D
Electrical - secure power and CO2
Electrode extension
Metal - get outside
1245 F
13. The main tool used to control the height and width of the weld bead is...
Contact tube
420 F
1245 F
Electrode extension
14. Melting temperature of Aluminum
DCT
Out of position work - thin gage metal - and good deposition rates
2200 F
1245 F
15. Melting temperature of Steel
2200 F
Electrical - secure power and CO2
Cover your eyes
2800 F
16. Fine tuning amperage will depend upon
Metal thickness - joint position - joint design
1245 F
Type of flux/polarity
DCT
17. Welding in the flat position on thin material is generally welded with the...
2800 F
Short circuit transfer
Improper work angles - lack of a heat sink - and improper parameters
1245 F
18. S
Drag
Speed of travel
Opened slowly
Angle of elect- rod
19. GMAW short circuit transfer can be used for...
Oil - Dry Chemical
Current
Out of position work - thin gage metal - and good deposition rates
1245 F
20. An oxygen cylinder valve should be...
Increased
Not turned in all the way
Oxidizing
Opened slowly
21. Cutting and welding tip are made of...
Contact tube
2200 F
Copper
2800 F
22. Class A
No
Increased
Ask - water
Tensile strength
23. Melting temperature of Solder
420 F
Tensile strength
Opened slowly
1640 F
24. A
250 psi
Oxidizing
Increased
Angle of elect- rod
25. Class B
Tip cleaners
Oil - Dry Chemical
Ask - water
Metal thickness - joint position - joint design
26. Melting temperature of Brass
Oxidizing
1640 F
Improper work angles - lack of a heat sink - and improper parameters
Electrode extension
27. Full tank pressure for an acetylene cylinder is...
Manipulation of puddle
Oil - Dry Chemical
Drag
250 psi
28. M
Increased
Manipulation of puddle
Length of arc
Improper work angles - lack of a heat sink - and improper parameters
29. Welding current is transmitted to the GMAW wire through the...
Contact tube
Improper work angles - lack of a heat sink - and improper parameters
420 F
Copper
30. Which metal cant be safely used in the presences of acetylene
Improper work angles - lack of a heat sink - and improper parameters
Increased
Copper
DCT
31. L
Tip cleaners
Speed of travel
Length of arc
None of the above
32. When not in user the regulater adjusting screw should be...
The valve from breaking off
Manipulation of puddle
Not turned in all the way
Cover your eyes
33. Melting temperature of Grey Cast Iron
Oxidizing
10
No
2800 F
34. The main purpose for a shielding gas cylinder cap is to protect
The valve from breaking off
Increased
Angle of elect- rod
Electrode extension
35. What shade of lens should you use for stick welding
2200 F
10
Electrical - secure power and CO2
Tensile strength
36. The deepest penetration is a result of which gun technique
None of the above
Ask - water
Angle of elect- rod
Drag
37. C
Angle of elect- rod
12-15 CFH
Electrical - secure power and CO2
Current
38. What comes out the center of the hole in a cutting tip
Electrical - secure power and CO2
Oxygen
15 psi
Type of flux/polarity
39. What should we do when the word cover is spoken
Speed of travel
Copper
Cover your eyes
2800 F
40. For short circuit transfer the contact tube should be...
Flush with or slightly extending from the nozzle - matched in size to wire diameter - and fastened tight
15 psi
No
Tensile strength
41. Can you weld vertical up with 7024
Speed of travel
Increased
No
1245 F
42. The Hottest oxy- acetylene flame
Oxidizing
Copper
Type of flux/polarity
Out of position work - thin gage metal - and good deposition rates