Electric Arc Welding

Question 1

Type of welding that uses constant current

Answer 1

SMAW

Question 2

Type of welding that uses constant voltage

Answer 2

GNAW

Question 3

3 types of power sources

Answer 3

transformers
inverters
generators

Question 4

polarity when negative is connected to elecrode

Answer 4

straight polarity

Question 5

polarity when positive is connected to electrode

Answer 5

reverse polarity

Question 6

polarity when electrode burns hotter with shallow penetration

Answer 6

straight polarity

Question 7

polarity when electrodes burns cooler and penetration is deeper

Answer 7

reverse polarity

Question 8

heat on the electrode is adjusted by

Answer 8

changing amperage

Question 9

starting, maintaining arc, and puddle fluidity and flow is maintained by

Answer 9

the voltage

Question 10

AWS E7018 stand for

Answer 10

E=electrode
first 2 tensile strength
position
coating and polarity

Question 11

Small pit holes caused by gases trapped in the weld

Answer 11

porosity

Question 12

weld type of corner and butt welds

Answer 12

groove welds

Question 13

weld type of tee and lap joints

Answer 13

fillet weld

Question 14

the width of a stringer bead

Answer 14

2-3 tunes the electrode core wire diameter